LaMotte P-6741-G DPD 1B free chlorine reagent, 30 mL bottleLaMotte DPD 1B Free Chlorine, 30 mL, P-6741-G In stock$1399
LaMotte P-6741-G DPD 1B free chlorine reagent, 30 mL bottle
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LaMotte DPD 1B Free Chlorine, 30 mL, P-6741-G

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$1399
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Quick overview

  • Free chlorine reagent The DPD 1B liquid used in the LaMotte free chlorine test.
  • Thirty milliliter bottle Supplied as a 30 mL bottle, the standard refill size.
  • Genuine LaMotte Part P-6741-G from LaMotte, the water testing manufacturer.
  • Refill, not a whole kit Buy the one reagent that ran out rather than a complete replacement kit.
  • Pairs with DPD 1A LaMotte lists DPD 1A alongside it, and kits that call for 1B normally use both.
  • Keep it fresh Reagents age, so a kit that reads oddly is often carrying a bottle that is past its useful life.
Full description and specifications ↓

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Product details

LaMotte P-6741-G is the DPD 1B free chlorine reagent, supplied in a 30 mL bottle. It is the refill for LaMotte pool water test kits that use the liquid DPD 1B.

Buy the bottle, not the kit

Reagents get used at different rates, and the chlorine bottles usually empty first because chlorine is the test people run most. Ordering the single reagent that ran out keeps a good kit in service instead of replacing the whole thing.

Keeping results honest

Liquid reagents age, and an aged bottle will quietly give you readings that look plausible but are not. If a kit that used to agree with your service tech has started to drift, fresh reagent is the cheapest thing to rule out. LaMotte lists DPD 1A in the same size, and tests that call for 1B typically use both.

Specifications
Brand LaMotte
Manufacturer part number P-6741-G
UPC 637395130953
Reagent DPD 1B
Test Free chlorine
Volume 30 mL
Shipping weight 0.15 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does this reagent test for?
Free chlorine. It is the DPD 1B liquid reagent.
How much is in the bottle?
30 mL.
Do I need DPD 1A as well?
Kits that call for DPD 1B normally use DPD 1A with it. LaMotte sells 1A separately in the same 30 mL size, so check what your kit calls for.
Why are my readings drifting?
Liquid reagents do not last forever. If a kit that used to read correctly has started giving odd or faint results, replacing the reagent bottles is the first thing to try.
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