Aquasonic Ph Fresh Test Kit
Probably the best fresh water pH test on the market with more tests (approx 150 per kit) and more accuracy due to the unique way the result is determined. Namely more test water is used, lessening the risk of contamination and the determination is made by viewing vertically through the test tube onto the colour chart.
The colour chart also has the correct colours for the bromothymol blue indicator.
pH 6.00 = Yellow and not 6.4 as some others have done.
The kit contains samples of pH adjusters.
Refill and spare test tubes are available.