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Hi
Please can you help!?
How can this be right?! One test showing 75/100 and one 4!!
Am I being thick?
This is what I don’t get! It looks three ppm to me on that, but 70 odd on the test on the rightNever used that test, but if 4 is the limit it seems it could still be considerable greater than 4ppm.
This is what I don’t get! It looks three ppm to me on that, but 70 odd on the test on the right