Narrow range pH strip tailored to the pH range applicable to brewing. pH strips are a convenient way to check/monitor pH without the cost or maintenance hassle of a full meter.
Vial of 100 strips with waterproof color chart.
Instructions:
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Remove one Beer pH test strip from the vial.
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Dip the test pad into the solution being tested for 1-2 seconds.
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Remove the strip, and compare against the color chart within 10-15 seconds. Do not let the pad dry before reading against the color chart.