This is the third of our You tube 'How to' video's outlining the use of the full range of the new D-D test kits.

 The step by step video guide will help you to get the best from your new test kit and provide accurate and stable results time after time.

Other video's covering the Calcium,Magnesium,Nitrate,Alkalinity and PO4 kits will also be uploaded to You Tube shortly. Click the image to view the Alkalinity test kit video.