These mulit-parameter test strips test for five water quality measurements on 1 strip: Free Chlorine, Total Chlorine, Total Hardness, Total Alkalinity, and pH (6.2 - 8.4). 50 test strips.
Colorimeter Handheld, DR 900 Multiparameter, HACH tests, Display:Graphical display 240 x 160 pixels, 231 mm x 96 mm x 48 mm, wavelength range- 420 nm, 520 nm, 560 nm, 610 nm
Comprehensive Basic Electricity Kit, Enables The Teaching Of Various Topics Related To Electricity, Flexible Alternative To A Circuit Board, Great For Grade 6, Included Trays Keep The Units Organized, Components Mounted On Tough, Yellow Plastic Bases
Dry Field Mapping Kit, includes cork-covered base, 30cmx26cm; pad of 25 sheets pre-printed conductive paper 28cmx21.5cm; pad of 100 sheets preprinted paper for drawing fields; ten metal-headed push pins; a silver conductive pen
Electrode Carbon with Stopper, Material: Carbon and rubber, Carbon rod, Fitted into rubber stopper, For use with Hoffman Electrolysis, Diameter: 0.25 in
Electrolysis Electrode, Material: Platinum, Sealed in glass tubes inserted securely in a rubber stopper, Fit standard electrolysis tubes, It has a rubber stopper No.1 with 18 gauge copper wire, Diameter: 0.75 cm, Length: 8.89 cm
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