{"id":252,"date":"2025-03-31T21:04:51","date_gmt":"2025-03-31T21:04:51","guid":{"rendered":"https:\/\/lazenby.net\/?page_id=252"},"modified":"2025-07-15T18:21:51","modified_gmt":"2025-07-15T18:21:51","slug":"procal-ntu-standards-epa-approved","status":"publish","type":"page","link":"https:\/\/lazenby.net\/index.php\/procal-ntu-standards-epa-approved\/","title":{"rendered":"ProCal NTU Standards (EPA Approved)"},"content":{"rendered":"\n<div class=\"wp-block-columns has-pale-cyan-blue-background-color has-background is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\" style=\"border-radius:15px\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:2px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<p><a href=\"https:\/\/lazenby.net\/index.php\/product-category\/procal-caibration-kits-for-hf-turbidimeters\/\" target=\"_blank\" rel=\"noreferrer noopener\">Link to ProCal Caibration Kits for HF Turbidimeters<\/a><a href=\"https:\/\/lazenby.net\/product-category\/procal-turbidity-standards-for-hach\/\"><br><\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<p><a href=\"https:\/\/lazenby.net\/index.php\/product-category\/procal-turbidity-standards-for-hach\/\" target=\"_blank\" rel=\"noreferrer noopener\">Link to ProCal Turbidity Stands for Hach<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-gallery alignright has-nested-images columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"290\" data-id=\"683\" src=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal-Calibration-Kit-for-Micro-100-TOL_39957.png?resize=300%2C290&#038;ssl=1\" alt=\"ProCal Calibration Kit\" class=\"wp-image-683\" srcset=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal-Calibration-Kit-for-Micro-100-TOL_39957.png?w=300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal-Calibration-Kit-for-Micro-100-TOL_39957.png?resize=200%2C193&amp;ssl=1 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"250\" data-id=\"227\" src=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/03\/procal-logo-200-x-250-px.png?resize=200%2C250&#038;ssl=1\" alt=\"ProCal logo\" class=\"wp-image-227\" style=\"aspect-ratio:1\" srcset=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/03\/procal-logo-200-x-250-px.png?w=200&amp;ssl=1 200w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/03\/procal-logo-200-x-250-px.png?resize=50%2C63&amp;ssl=1 50w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" data-id=\"748\" src=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=300%2C300&#038;ssl=1\" alt=\"\" class=\"wp-image-748\" srcset=\"https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?w=300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=270%2C270&amp;ssl=1 270w, https:\/\/i0.wp.com\/lazenby.net\/wp-content\/uploads\/2025\/04\/ProCal_with_H2100Q-1.png?resize=230%2C230&amp;ssl=1 230w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><a href=\"https:\/\/lazenby.net\/index.php\/product-category\/procal-caibration-kits-for-hf-turbidimeters\/\" target=\"_blank\" rel=\"noreferrer noopener\">HF scientific Primary Turbidity Standard ProCal turbidity standards<\/a><a href=\"https:\/\/lazenby.net\/product-category\/procal-primary-turbidity-standards\/procal-primary-turbidity-standards-pro-cal-calibration-kits-for-hf-turbidimeters\/\" target=\"_blank\" rel=\"noreferrer noopener\"> <\/a>are pre-diluted, factory certified, and ready for use with not only the HF scientific turbidimeter product line but with other manufacturer\u2019s instrumentation, literature link for <a href=\"https:\/\/lazenby.net\/index.php\/product-category\/procal-turbidity-standards-for-hach\/\" target=\"_blank\" rel=\"noreferrer noopener\">ProCal for Hach<\/a> instruments.<\/p>\n\n\n\n<p>The ProCal standard formulation utilizes a preservative that enhances stability, yet is safe and biodegrades rapidly in aquatic environments.&nbsp; Sold in a variety of different packages including: one liter, one gallon and more with virtually any value of interest available.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Greener \u2013 safe and non-toxic<\/li>\n\n\n\n<li>Two year shelf life<\/li>\n\n\n\n<li>Cost Effective<\/li>\n\n\n\n<li>Easy to use<\/li>\n\n\n\n<li>Custom standards available<\/li>\n\n\n\n<li>Traceable to Formazin<\/li>\n<\/ul>\n\n\n\n<p><em>\u201c\u2026the\u2003Office \u2003of\u2003Ground\u2003Water\u2003and\u2003Drinking Water\u2019s\u2003Technical\u2003Support\u2003Center\u2003has\u2003concluded\u2003 that\u2003 HF scientific\u2019s \u2003 solution\u2003 is\u2003 an\u2003 acceptable\u2003 equivalent\u2003 to\u2003 currently\u2003approved\u2003primary\u2003polymer\u2003turbidity\u2003standards\u201d<\/em><\/p>\n\n\n\n<p><em>EPA,\u2003Feb.\u20032010 Primary Turbidity Standard<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Link to ProCal Caibration Kits for HF Turbidimeters Link to ProCal Turbidity Stands for Hach HF scientific Primary Turbidity Standard ProCal turbidity standards are pre-diluted, factory certified, and ready for use with not only the HF scientific turbidimeter product line<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-252","page","type-page","status-publish","hentry","","tg-column-two"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ProCal NTU Standards (EPA Approved) - Lazenby &amp; Associates, Inc.<\/title>\n<meta name=\"description\" content=\"HF scientific ProCal Turbidity NTU Standards\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lazenby.net\/index.php\/procal-ntu-standards-epa-approved\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ProCal NTU Standards (EPA Approved) - Lazenby &amp; 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