Taylor Replacement Pool Test Reagents

Keep your pool water test kit accurate and ready with replacement pool test reagents from Taylor Technologies, LaMotte, and Pentair. PST Pool Supplies stocks the reagent refills used in the most common professional pool water test kits — DPD powder and liquid for free and combined chlorine, calcium buffer, hardness reagent, OTO solutions, and LaMotte WaterLink photometric analyzer disks, starting from $10.20.

Taylor Technologies is the standard in professional pool water testing — their K-2006 and K-2005 test kits are used by pool professionals and serious pool owners worldwide. Replacement reagents include: R-0870-J DPD Powder (dry DPD reagent for total chlorine and combined chlorine testing in Taylor's drop-count method), available in multiple sizes up to 113 grams; R-0002-C DPD Liquid (liquid DPD #1 indicator for free chlorine drop-count testing); R-0012-C Hardness Reagent (the titrating reagent for total hardness/calcium hardness drop-count testing); and R-0010-A Calcium Buffer (the buffer solution used alongside the hardness reagent that creates the alkaline pH needed for the hardness titration to work correctly — the calcium buffer and hardness reagent are always used as a pair). Pentair Solution 3 Reagent (R161185, 1 oz) is a reagent used in the Pentair No. 78 and 7000 series test kits for acid demand and total alkalinity testing. Pentair OTO Test Solutions provide the orthotolidine-based yellow-color total chlorine test for simpler OTO-style test kits. The LaMotte WaterLink Reagent Cart Disk is the consumable reagent disk used in LaMotte's WaterLink Spin photometric analyzers — laboratory-grade automated water analysis instruments used in professional pool service operations, providing precise multi-parameter readings from a single water sample.

Reagent accuracy is the foundation of reliable pool water testing — expired or degraded reagents produce incorrect readings that lead to over- or under-treatment of pool chemistry. Taylor Technologies recommends replacing all reagents annually even if not fully consumed, as liquid reagents degrade with exposure to light, temperature fluctuation, and oxidation from pool chemical vapors. Store reagents in a cool, dark location away from pool chemicals — reagent bottles stored on the pool deck in direct sunlight degrade rapidly. When a Taylor test produces a reading that seems inconsistent with how the pool looks and feels, expired reagents are frequently the cause. DPD powder (R-0870-J) has a longer shelf life than DPD liquid when stored properly, making it preferable for test kits used infrequently.

Shop pool test reagents and ensure your water chemistry readings are always accurate and reliable.