For making calibration solutions for pH meters. Consists of two capsules, orange for pH 4 and green for pH 7. Creates a consistent pH level for meter calibration. Buffer solution preparation: 1. Remove the capsule from the packaging. 2. Empty the powder from the capsule into a container. 3. Add 100 ml distilled water. 4. Mix the powder until it is completely dissolved. For precise measurements the instrument should be calibrated using a buffer solution before each use. Recalibration does not need to be done during use, provided that this period does not exceed 1-2 hours. Prepared solutions are normally used only once and any remaining solution is typically disposed of. However, this solution can also be stored for up to a year if stored in a sterile container. Store chilled, preferably in a refrigerator.

Packaging size 10 x 6 x 1 cm
Packaging weight 4 g
Clas Ohlson 2 year guarantee

Clas Ohlson always has a 2 year guarantee

We are proud of our products and it is very important that you, as a customer, are happy with the service and products we provide.This is why we have a 2 year guarantee on most of our products and on specific products we leave a 25 year guarantee. The only exception is on consumables (such as batteries and light bulbs). Keep a look out for our guarantee-logo next to your chosen product to see what guarantee package it has. Our guarantee means that the product is expected to work just like we have described it during the time of guarantee we have promised (This in addition to the rights under consumer purchasing).

read more in our Terms and Conditions