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This Insta-TEST® Low Range Phosphate Test Strips measure the phosphate levels from 0, 100, 200, 300, 500, 1000, 2500 ppb in just 15 seconds. Bottle includes 25 test strips Packaged in a waterproof PopTop bottle Molded desiccant liner protects the strips from moisture and UV light Includes trilingual instructions (English, Spanish, French) Part #3021-G-6
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🇺🇸 Ship from USA · On Agora since 2026
$4.79