King British 6 in 1 Water Test Strips - Beaphar
The Ammonia test strips are identical to those of API Ammonia test strips and give the same results. Even the test procedure is identical. The remaining tests are similar to the Easy Test test kit. So, all in all, great value for money at £13 (when API Ammonia alone costs £11). These plastic test strips don't make it obvious which side to read.
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