Check the listing for details. Lamotte Insta Test 3 Plus Test Strips 50 Count. Condition: New. Listed at 12.98 USD. Insta-Test 3 Plus Test StripsThe Insta-TEST® 3 Plus pool & spa strip measures Free Chlorine 0-10 ppm, Bromine 0-20 ppm, Total Alkalinity 0-240 ppm, and pH 6.2-9.0. This test strip is a dip-n-read strip with instant results. Each bottle includes 50 test strips packaged in a waterproof blue PopTop bottle with a hinged cap.The bottle has a molded desiccant liner, which protects the strips from moisture and UV light. The Insta-TEST® 3 Plus strip is perfect for basic water testing of the most important test factorsHow to Use:Store vials indoors away from extreme heat and moisture.Avoid pulling strips from vial with wet fingers.After opening vial shake out strips, pick one for use, and then firmly reseal cap.Immerse the strip at least 12 inches below the water surface (in pools, in spas just below water surface is fine) and swirl the strip 3 times in about a one foot circle.Always lift the strip from the water with the pads face up (level). DO NOT shake off excess water.Start reading results promptly after removing the strip from the water beginning with the end pad (e.g. Free Chlorine) and then downward in order. This allows the pH pad several seconds to fully develop its color.Note that when testing a sample from the pool obtained in a cup-size container the strip should be swirled 5 times for proper exposure.