Science Fair Kits and Projects

Test kits run out; hydrometers shatter and only read accurately at 20C. A better alternative is this rugged refractometer thats temperature compensated and fully automatic. After only a few seconds and a few drops of sample, a high-contrast scale reads both specific gravity from 1.0001.070, 0.001, and ppt from 0100, from 1030C with 1.0 ppt accuracy. It also features an anti-corrosion, anti-roll design and comes with a case, calibration solution, and manual. Size: 7 1/2″L x 1 1/2″ dia.

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Test kits run out; hydrometers shatter and only read accurately at 20C. A better alternative is this rugged refractometer thats temperature compensated and fully automatic. After only a few seconds and a few drops of sample, a high-contrast scale reads both specific gravity from 1.0001.070, 0.001, and ppt from 0100, from 1030C with 1.0 ppt accuracy. It also features an anti-corrosion, anti-roll design and comes with a case, calibration solution, and manual. Size: 7 1/2″L x 1 1/2″ dia.

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The digital display eliminates the guesswork associated with chemical test kits, and a protected sodium ion selective electrode bulb gives fast measurements. It includes pNa-g/L conversion table. Range: 01 pNaCl (58.4 to 5.84 g/L NaCl); resolution: 0.01 pNaCl; accuracy: 0.02 pNaCl; operating temperature: 050C/32122F. Size: 6 3/4″L x 1 1/2″W x 3/4″H. Four 1.4 V mercury batteries are included.

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The digital display eliminates the guesswork associated with chemical test kits, and a protected sodium ion selective electrode bulb gives fast measurements. It includes pNa-g/L conversion table. Range: 01 pNaCl (58.4 to 5.84 g/L NaCl); resolution: 0.01 pNaCl; accuracy: 0.02 pNaCl; operating temperature: 050C/32122F. Size: 6 3/4″L x 1 1/2″W x 3/4″H. Four 1.4 V mercury batteries are included.

click here to learn more