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

How many should go in a lay z spa roughly??

These are test tablets to tell you how much chlorine you have, not chlorine tablets!

Certikin Dpd No 1 Chlorine Tablets 250 Count For Photometer

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 38.86

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In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧊 Keep your water flawless—test smarter, not harder!

PRECISION YOU CAN TRUST - Accurately measures free chlorine, bromine, ozone, and more for comprehensive water quality control.
BULK SUPPLY ZERO DOWNTIME - 250 tablets per pack ensure you never run out during critical pool maintenance cycles.
EFFORTLESS TESTING ROUTINE - Simple crush-and-mix method delivers immediate, reliable results—no lab expertise needed.
STAY AHEAD OF WATER SAFETY - Trusted by pool pros to maintain crystal-clear, compliant water conditions season after season.
VERSATILITY MEETS PROFESSIONAL GRADE - Compatible with photometers and comparators, perfect for both personal and commercial use.

Certikin's DPD No 1 Chlorine Tablets offer 250 multicoloured reagent tablets designed for precise measurement of free chlorine, bromine, ozone, and monochloramine-dichloramine levels. Compatible with photometers and comparators, these easy-to-use tablets provide immediate, accurate water quality results with a long shelf life, making them an essential tool for pool owners and water treatment professionals committed to maintaining safe, compliant aquatic environments.

Specifications

ASIN	B00WRCNEZM
Benefits	Facilitates accurate measurement of free chlorine in pool water, ensuring safety and compliance with legal regulations
Best Sellers Rank	10,905 in Garden ( See Top 100 in Garden ) 69 in Chlorine
Brand	Certikin
Brand Name	Certikin
Customer Reviews	4.6 out of 5 stars 123 Reviews
Item Form	Tablet
Item form	Tablet
Manufacturer	Astralpool
Manufacturer Part Number	localization_B00WRCNEZM
Number of Items	250
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

Reviews

S**I

Just as described

Perfect

29.12.2025

T**G

Good item

11.10.2025

P**E

A+

16.03.2025

F**T

A must have for pool chlorination

It works well and returns an accurate reading. Next time I’ll try quick dissolving tablets.

30.12.2024

G**H

Good value

8.03.2025

F**.

Great little tablets

These do exactly what they’re meant to very pleased with them

8.11.2024

L**S

need this for keeping hot tub water correctly

this product has helped maintain my hot tub water correctly

21.07.2019

Z**B

Perfect

These tablets are great They fizz away for two minutes. Perfect will buy again

12.07.2018

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 38.86

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago