DPD N°4 Reagents Tablets (50) – for Pool Photometers TISHED50 Method-correct filtration: supports the sample

Method-correct filtration: supports the sample prep step required for these tests

Test parameter: Multi-parameter (Free Chlorine

Why pool test strips fail at high CYA (and what works better)

Why this matters for accuracy

DPD N°4 Reagents Tablets (50) – for Pool Photometers TISHED50 Method-correct filtration: supports the sampleDPD N4 Reagents Tablets (50) are photometer compatible replacement refill reagent tablets used for accurate pool & spa testing. Key Specs Product type: Replacement refill reagent tablets (consumable) Test parameter: Active oxygen Format: Tablet reagent (50 tablets) Shelf life: 2 years (sealed, stored properly) What this reagent does DPD N 4 is a reagent used by compatible photometers to measure Active oxygen. Water disinfected with persulfate