Lovibond DPD No.1 High Calcium Tablets are specifically formulated for the accurate measurement of free chlorine in water samples with a high calcium content. Designed to prevent interference from elevated calcium levels, these tablets ensure precise and reliable chlorine readings.

Ideal for use in pools, spas and water systems where calcium hardness is a concern, the tablets utilise the DPD method to produce a colour change which indicates free chlorine levels. 

Compatible with Lovibond photometers, these high calcium tablets help to maintain water safety and clarity in environments with hard water conditions. 

Different size boxes available including 100 & 250

515741BT: 250 Pack

515740BT-100 Pack

NOTE: 

There has recently been an amendment to the UK Poisons Act 1972 regarding the supply of Explosives precursors which comes into effect from October 1^st 2023 and covers the supply of certain materials. 

In order to comply with these regulations we kindly ask that you complete the following actions as quickly as possible in order to avoid disruption to supply.

• Please complete this form, along with a copy of a photographic ID (such as a passport, driving licence, trade ID card, business ID card) for the individual that your company authorises to purchase these materials.
• You will need to understand your legal obligations under the Act, particularly in regard to the reporting of loss, theft or suspicious activity.
• If you are reselling these materials then you may need to obtain and retain the same information from your customers.

Further information can be found at https://www.gov.uk/government/publications/supplying-explosives-precursors/supplying-explosives-precursors-and-poison