Do they come with chart to c how much chlorine

These tablets are designed for use with a comparator so are not designed to be used alone, therefore they arent supplied with a colour chart

How do l test the water with the tabĺets

These tablets are designed to be used with a Lovibond comparator or photometer.

Can I use these with the PoolLab 1.0 photometer?

They are suitable for use in a range of photometers including the poollab, the 250 packs are the best value and the ones in stock at lab sales have a shelf life of over 5 years

ASIN	B00WRCNEZM
Benefits	Facilitates accurate measurement of free chlorine in pool water, ensuring safety and compliance with legal regulations
Best Sellers Rank	6,627 in Garden ( See Top 100 in Garden ) 37 in Chlorine
Brand	Certikin
Brand Name	Certikin
Country Of Origin	Germany
Customer Reviews	4.6 out of 5 stars 117 Reviews
Item Form	Tablet
Item form	Tablet
Manufacturer	Astralpool
Number of items	250
Product benefits	Facilitates accurate measurement of free chlorine in pool water, ensuring safety and compliance with legal regulations Product benefits Facilitates accurate measurement of free chlorine in pool water, ensuring safety and compliance with legal regulations See more
Unit Count	250 count
Unit count	250 count

Certikin - DPD No 1 Chlorine Tablets | 250 Count for Photometer | Measures Chlorine, Bromine, Ozone | Long Shelf Life, Easy to Use | Suitable for Photometers, Multicoloured

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