My dpd powder looks crystalized. Bought it last year and just opened it. Is it bad?

This reagent is one of those with a shorter shelf life in the Taylor catalog. There should be an expiration date printed on the bottle. It may still be good, but proceed with care if it is over a year old. According to Taylor, with respect to the R-0870 reagent, this may help you identify if the reagent has become compromised and should be discarded: "As it degrades, the color will turn from an off-white color to gray or purplish gray and will gradually become a purplish brown color." As a general precaution, Taylor recommends replacing all reagents more than one year old.

what is the expiration date

The seller on mine was EZ Test Pool Supplies and the expiration Date is 08/22

Is there any way to know the expiration date of the current product? Some seller sent me product expired last year?

All product is 1 or 2 years for expiration. Ask the seller to send a newer one.

What is the difference between R-0870 and R-0870-l ?

R-0870 is the number of the reagent. The additional suffix such as -I or -J indicates the size. R-0870-I is 10 grams. R-0870-J is the same reagent in 0.25 lb size.

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Taylor R-0870-DPD Powder (10 g)

Product ID: 285143021

Details

Brand
Taylor
Item form
Powder
Item weight
0.01 Ounces
UPC
840036002049

⏳freshness critical for accuracy

💧ensures reliable chlorine testing

⚖️10g precise dosing

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Description

💧 Stay sharp, stay balanced — pool testing perfected.

COMPACT CONVENIENT - Small 10g container fits perfectly into your routine—fresh supply when you need it.
FRESHNESS YOU CAN TRUST - Use fresh reagent to avoid moisture-induced inaccuracies—accuracy matters.
PRECISION PACKED 10 G POWDER - Exact dosing for consistent, reliable pool testing results every time.
TAYLOR APPROVED GOLD STANDARD - Industry-leading reagent trusted by pros for precise free chlorine measurement.
OPTIMIZE POOL HEALTH WITH CONFIDENCE - Accurate readings prevent costly over-chlorination and chemical waste.

Taylor R-0870-DPD Powder is a 10-gram replacement reagent designed for Taylor pool test kits, delivering precise and reliable free chlorine measurements. Trusted by professionals and pool enthusiasts alike, this reagent ensures accurate water chemistry testing to optimize pool health and chemical use. Freshness is key—use promptly to maintain test accuracy and avoid moisture degradation.

Specifications

ASIN	B0002IXJ1M
Brand Name	Taylor
Customer Reviews	4.7 4.7 out of 5 stars (1,136)
Item Form	Powder
Item Type Name	Taylor Technologies R-0870-I DPD Powder for Swimming Pool, 10gm
Item Weight	0.01 Ounces
Manufacturer	Taylor Technologies, Inc
Manufacturer Part Number	R-0870-I
Model Number	R-0870-I
Number of Items	1
Product Benefits	Assists in maintaining balanced water chemistry and accurate testing for pool and spa water treatment
UPC	840036002049

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