Lovibond Calcium Hardness Tablets 250 Bottle

Lovibond Calcium Hardness 250 Bottle

£18.99 inc VAT (£15.83 exc VAT)

In stock

Product reference: 3791 Category:


Lovibond Calcium Hardness Tablets x 250 Tablets
Calcium Hardness tablets – 250 tablets to be used in conjuction with the 50ml or 100ml shaker bottles. These tablets measure calcium hardness as mg/l – simply add one tablet to your sample, stopper and shake to disintigrate tablet. Repeat unitl pink colour changes to violet.
Calcium Hardness can then be calculated as:
50ml sample container = number of tablets added multiplied by 40 then minus 20 to give you your Calcium Hardness reading. i.e. 6 tablets added, so (6 x 40) – 20 = 220 mg/l
100ml sample container = number of tablets added multiplied by 20 then minus 10 to give you your Calcium Hardness reading. i.e. 11 tablets added, so (11 x 20) – 10 = 210 mg/l
As you can see from the above examples it is more tablet efficient to use a 50ml stoppered sample of water for testing.

What is Calcium Hardness?Most of the hardness of your water supply is dissolved Calcium salts due to the water having arisen in Chalk or Limestone areas. Magnesium salts also tend to be grouped with Calcium in this description. Some hardness is good for your pool otherwise Calcium from sources such as tile grout will be dissolved. Conversely, too much causes scaling problems.

Calcium hungry?If water is very soft i.e. it contains little dissolved Calcium from a hard water source, it will then dissolve Calcium from other sources such as concrete and tile grout. The use of Calcium Chloride (Water Hardness Increase) will counteract this, as may the use of Calcium Hypochlorite as a sanitiser

Awaiting documentation.

Warranty & Returns

This product is fully CE approved, but as a chemical based product returns are restricted, and the means of return have to be approved by us, prior to the item being returned due to the nature of these goods.

Should you require any further information, please email info@comls.co.uk where we will respond to your request quickly.

Stock & Delivery

This product is in stock at our warehouse and is ready for Express or Economy Delivery Service.

Delivery – Mainland UK
Orders placed before 2pm Monday to Friday we aim to dispatch on the same day, after 2pm will be the following working day. This does not include Bank Holidays, which are classed as non-working days. Should you require a Saturday delivery or have any other delivery enquiries, please email info@comls.co.uk  who will respond to your request quickly.

Try to include your mobile phone number in the checkout area so that our delivery drivers can contact you should they need any further assistance or clarification in delivering your order.

Please ensure you leave detailed information if your delivery address is hard to find or a new housing development. If you know there is a possibility of missing the delivery, you can at the checkout stage leave instructions for the delivery driver to leave without signature and place your goods with a neighbour or in a discreet place out of sight for your later retrieval.

Please note some areas including Scotland(post codes AB, FK, IV, KW, PA, PH, HS, KA, ZE, TR, DD,PH, PA, KY, AB, DD, KW, IV, HS), Isle of Wight, Isle of Man, will need extra carriage. We no longer ship to Jersey, Guernsey or Northern Ireland.


If you are unable to thoroughly check your delivery upon receipt, sign for it as UNCHECKED. If the package is damaged in any way, no matter how small, please sign for it as DAMAGED. We CANNOT CLAIM from our carriers for any damaged items that have not been signed for as UNCHECKED or DAMAGED.

If you sign for a delivery as OK, which you later find to be damaged, our carriers WILL NOT accept liability and you may be charged for the damaged items, in this case a delivery charge for replacement items WILL be made.

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