{"id":4004,"date":"2019-08-07T21:18:46","date_gmt":"2019-08-07T13:18:46","guid":{"rendered":"http:\/\/scubatechphilippines.com\/scuba_blog\/?p=4004"},"modified":"2023-04-28T19:54:03","modified_gmt":"2023-04-28T11:54:03","slug":"technical-diving-optimal-gas-mixes","status":"publish","type":"post","link":"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/","title":{"rendered":"Technical Diving Standard Gas Mixes"},"content":{"rendered":"\n<h1 class=\"wp-block-heading has-text-align-center\">Technical Diving Standard Gas Mixes<\/h1>\n\n\n\n<p>Are you an avid diver looking to take your skills to the next level with <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/what-is-technical-diving\/\">technical diving<\/a>? If so, then understanding gas mixes is crucial for your safety and success. Technical diving involves diving deeper and longer than recreational diving, requiring specialized equipment and knowledge. In this article, we will discuss technical diving standard gas mixes. Whether you are a seasoned technical diver or just starting, this guide will provide you with essential information to help you plan your dives and stay safe underwater.<\/p>\n\n\n\n<p>Technical diving is a form of scuba diving that involves exceeding the typical recreational limits imposed on depth and immersion time (bottom time) and may involve the use of accelerated <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/understanding-m-values-eric-baker\/\">decompression<\/a> and\/or variable gas mixtures during a dive. One aspect of technical diving is the use of specialized gas mixes to minimize the risk of <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/oxygen-toxicity-thalmann\/\">oxygen toxicity<\/a> and <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/nitrogen-narcosis-sedation-consciousness\/\">nitrogen narcosis<\/a> at depth. These <a href=\"https:\/\/gue.com\/blog\/standard-gases-the-advantages-of-having-everyone-singing-the-same-song\/\" target=\"_blank\" rel=\"noreferrer noopener\">specialized gas mixes are referred to as &#8220;standard gases&#8221; in the technical diving community<\/a>.<\/p>\n\n\n\n<p>The purpose of using standard gases in technical diving is to maintain a maximum <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-gas-laws-for-diving-physics\/\">partial pressure<\/a> of oxygen (PO2) of 1.2-1.3 bar for the working portion of the dive and an <a href=\"https:\/\/gue.com\/blog\/standard-gases-the-advantages-of-having-everyone-singing-the-same-song\/\" target=\"_blank\" rel=\"noreferrer noopener\">equivalent narcotic depth (END) of no greater than 30 meters or 100 feet<\/a>. This helps to minimize the risk of oxygen toxicity and nitrogen narcosis, both of which can be dangerous at depth.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Article Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Best-mix-versus-standard-mix-for-technical-diving\" >Best mix versus standard mix for technical diving<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Why-technical-diving-standard-gas-mixes-are-useful\" >Why technical diving standard gas mixes are useful<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Recommendations-for-technical-diving-gas-selection\" >Recommendations for technical diving gas selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Technical-diving-standard-gas-mixes-table\" >Technical diving standard gas mixes table<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#GUE-and-the-use-of-standard-technical-diving-gases\" >GUE and the use of standard technical diving gases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Technical-diving-standard-gases\" >Technical diving standard gases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#About-The-Author\" >About The Author<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/technical-diving-optimal-gas-mixes\/#Purchase-my-exclusive-diving-ebooks\" >Purchase my exclusive diving ebooks!<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Best-mix-versus-standard-mix-for-technical-diving\"><\/span>Best mix versus standard mix for technical diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>There are two approaches to selecting the gas mix for a technical dive: Best Mix and Standard Mix. Best Mix refers to calculating the gas mix based on the planned depth of the dive to ensure the maximum PO2 and END are not exceeded. In contrast, Standard Mix refers to using predetermined gas mixes that meet the criteria for maximum PO2 and END for a given depth range. The <a href=\"https:\/\/www.divezen.com\/resources\/standard-gases\/\" target=\"_blank\" rel=\"noreferrer noopener\">use of Standard Mixes has the advantage of simplifying dive planning and communication between divers and dive teams<\/a>.<\/p>\n\n\n\n<p>The most common gas mixture used in recreational diving is compressed air, which is a blend of 21% oxygen, 78% nitrogen, and 1% trace gases. However, for technical diving, trimix is commonly used. <\/p>\n\n\n\n<p>Trimix is a blend of oxygen, nitrogen, and <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/why-do-deep-divers-use-helium\/\">helium<\/a> that replaces part of the oxygen and nitrogen with helium to allow divers to go beyond the limits of recreational diving with <a href=\"https:\/\/dive.site\/blog\/diving-gas-mixes\/\" target=\"_blank\" rel=\"noreferrer noopener\">less risk of oxygen toxicity and nitrogen narcosis<\/a>. <\/p>\n\n\n\n<p>In summary, standard gases are a set of predetermined gas mixes that meet the criteria for maximum PO2 and END for a given depth range, and they are commonly used in technical diving to minimizing the risk of oxygen toxicity and nitrogen narcosis. Trimix is a commonly used gas mixture in technical diving that replaces part of oxygen and nitrogen with helium.<\/p>\n\n\n\n<div class=\"scuba-b4-h2-2\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-393933985\"><div class=\"scuba-adlabel\">Sponsored Link<\/div><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9354033900485448\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-9354033900485448\" \ndata-ad-slot=\"2393012471\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"false\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why-technical-diving-standard-gas-mixes-are-useful\"><\/span>Why technical diving standard gas mixes are useful<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Knowledge of optimal gas mix selection is critical to the technical diver. The graph below simply correlates bottom depth against a desired END. It is consistent with the tech community standard of 1.4ppO2 for the working phase of the dive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Recommendations-for-technical-diving-gas-selection\"><\/span>Recommendations for technical diving gas selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>I HIGHLY RECOMMEND never diving with an equivalent narcotic depth (END) over 30m\u00a0if entering a complex overhead environment. <\/p>\n\n\n\n<p>Similarly, attention should be paid to the<a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/co2-narcosis-qa\/\"> DAN gas density recommendations<\/a>. These limit air diving below 33m.<\/p>\n\n\n\n<p>Environmental conditions and other factors; such as cold water or <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/improving-air-consumption-scuba-diving\/\">exertion<\/a>, should be accounted for when determining a suitable END. Always dive within personal limits, ability, and training.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Technical-diving-standard-gas-mixes-table\"><\/span>Technical diving standard gas mixes table<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The chart does not substitute for accurate technical dive planning utilizing appropriate decompression software.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"694\" height=\"639\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2014\/04\/Optimal-technical-diving-gas-choices-table.jpg\" alt=\"Technical Diving Optimal Gas Mix Table\" class=\"wp-image-4005\" title=\"Technical Diving Optimal Gas Mix Table\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2014\/04\/Optimal-technical-diving-gas-choices-table.jpg 694w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2014\/04\/Optimal-technical-diving-gas-choices-table-300x276.jpg 300w\" sizes=\"(max-width: 694px) 100vw, 694px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><strong>***WARNING***<\/strong><br \/> <strong>USE AT YOUR OWN RISK<\/strong><\/p>\n\n\n\n<div class=\"scuba-b4-h2-3\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-3316427772\"><div class=\"scuba-adlabel\">Sponsored Link<\/div><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9354033900485448\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-9354033900485448\" \ndata-ad-slot=\"6151212517\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"false\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"GUE-and-the-use-of-standard-technical-diving-gases\"><\/span>GUE and the use of standard technical diving gases<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>GUE (Global Underwater Explorers) is a diving organization that pioneered standardized breathing mixtures. <\/p>\n\n\n\n<p>These gases maintain:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maximum PO2 of 1.2-1.3 bar for the working portion of the dive. Equivalent narcotic depth (END) ? 30 m\/100 ft<\/li>\n\n\n\n<li>PO2s during ascent to a maximum of 1.4 bar for deep decompression<\/li>\n\n\n\n<li>1.6 for 6m\/20 ft decompression <a href=\"https:\/\/gue.com\/blog\/standard-gases-the-advantages-of-having-everyone-singing-the-same-song\/\" target=\"_blank\" rel=\"noreferrer noopener\">using standard deco mixes<\/a>. <\/li>\n<\/ul>\n\n\n\n<p>The selection of standard mixes is based on several criteria. These include the <a href=\"https:\/\/www.divezen.com\/resources\/standard-gases\/\" target=\"_blank\" rel=\"noreferrer noopener\">ability to partial pressure blend by adding helium and then topping with Nitrox<\/a> 32%. This helps simplify gas blending at a local site or in remote areas.<\/p>\n\n\n\n<p>By using standardized breathing mixes, GUE ensures consistency within the team. In turn, this helps the divers learn the decompression schedule more easily.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Technical-diving-standard-gases\"><\/span>Technical diving standard gases<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In conclusion, understanding technical diving standard gas mixes is essential for every technical diver. It not only helps to mitigate known gas-related risks but also helps to standardize team diving. With the right knowledge and training, technical diving can be a thrilling and rewarding experience. <\/p>\n\n\n\n<p>Remember to always plan your dives carefully. This should include the type of gas mix to use based on the depth, duration, and objectives of the dive. By doing so, you can ensure your safety and success while exploring the depths of the underwater world. So, get ready to dive deeper and stay safe with the right technical diving gas mixes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-content-justification-center is-layout-constrained wp-block-column-is-layout-constrained\" style=\"flex-basis:25%\">\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-medium is-resized is-style-default\"><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\"><img decoding=\"async\" width=\"300\" height=\"296\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-300x296.png\" alt=\"Andy Davis Technical Sidemount Wreck Diving Subic Bay Philippines RAID Courses Training\" class=\"wp-image-6812\" style=\"width:225px;height:222px\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-300x296.png 300w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-1024x1009.png 1024w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-768x757.png 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1.png 1280w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-constrained wp-block-column-is-layout-constrained\" style=\"flex-basis:75%\">\n<h2 class=\"wp-block-heading has-text-align-center\"><span class=\"ez-toc-section\" id=\"About-The-Author\"><\/span>About The Author<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"274\" height=\"77\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1.png\" alt=\"\" class=\"wp-image-27046\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1.png 274w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1-250x70.png 250w\" sizes=\"(max-width: 274px) 100vw, 274px\" \/><\/a><\/figure>\n\n\n\n<p><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\">Andy Davis<\/a> is a <a href=\"https:\/\/scubatechphilippines.com\/raid-diving-courses-philippines\/raid\/\">RAID<\/a>, PADI TecRec, ANDI, BSAC, and SSI-qualified independent technical diving instructor who specializes in teaching <a href=\"https:\/\/scubatechphilippines.com\/sidemount-courses\/\">sidemount<\/a>, <a href=\"https:\/\/scubatechphilippines.com\/technical-diving-courses\/\">trimix<\/a>, and <a href=\"https:\/\/scubatechphilippines.com\/technical-diving-courses\/\">advanced wreck<\/a> diving courses.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>Currently residing in <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/subic-bay-wreck-diving-sites\/\">Subic Bay, Philippines<\/a>; he has amassed more than 10,000 open-circuit and CCR dives over three decades of challenging diving across the globe.<\/p>\n\n\n\n<p><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\">Andy<\/a> has published numerous diving magazine articles and designed advanced certification courses for several dive training agencies, He regularly tests and reviews new dive gear for scuba equipment manufacturers. Andy is currently writing a series of <a href=\"https:\/\/www.buymeacoffee.com\/andydavistech\/extras\">advanced diving books <\/a>and creating a range of <a href=\"https:\/\/www.redbubble.com\/people\/andydavistech\/shop\">tech diving clothing and accessories<\/a>.<\/p>\n\n\n\n<p>Prior to becoming a professional technical diving educator in 2006, Andy was a commissioned officer in the Royal Air Force and has served in Iraq, Afghanistan, Belize, and Cyprus.<\/p>\n\n\n\n<p>In 2023, Andy was named in the &#8220;<a rel=\"noreferrer noopener\" href=\"https:\/\/gue.com\/blog\/sidemount-andy-davies\/\" target=\"_blank\">Who&#8217;s Who of Sidemount<\/a>&#8221; list by GUE InDepth Magazine.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-palette-color-7-color has-vivid-red-background-color has-text-color has-background has-link-color wp-elements-dd81a6de961563c5bf17302e4376cbd2\"><span class=\"ez-toc-section\" id=\"Purchase-my-exclusive-diving-ebooks\"><\/span>Purchase my exclusive diving ebooks!<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/233191\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-652x1024.jpg\" alt=\"Gas Management For Scuba Divers Book\" class=\"wp-image-26264\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/233171\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-652x1024.jpg\" alt=\"Become A Shearwater Power User Book\" class=\"wp-image-26382\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-978x1536.jpg 978w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-95x150.jpg 95w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook.jpg 1200w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/111242\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-652x1024.jpg\" alt=\"\" class=\"wp-image-26656\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/262907\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-652x1024.jpg\" alt=\"A Comprehensive Guide to Backplate &amp; Wing BCDs\" class=\"wp-image-26808\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-768x1206.jpg 768w, 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