Digital PH Meter (0.01PH / 0.00~14.00PH) and this set offers a

and this set offers a variety of angles to accommodate diverse experimental requirements

resulting in a measurable change in the manometer liquid level

1 x Green School Study Chair

the wheel and axle

Real Housefly Stages: The specimen features actual housefly specimens in various life cycle stages

Digital PH Meter (0.01PH / 0.00~14.00PH) and this set offers aAccessories Instruction Manual, pH electrode, PE12; pH 7. 00 buffer solution, PH7A; pH 4. 00 buffer solution, PH4A. pH electrode 5 to 80pH; Operating Temperature 0 to 60; Operating Humidity Less than 80Percent RH. pH Range 0 to 14 pH, Resolution 0. 01 pH, Accuracy pH 0. 02 pH. Temperature Range 5 to 80, Resolution 0. 1 , Accuracy 0. 8. pH Input 1012 ohms; Memory Recall Maximum and Minimum value; Data Hold Freeze the display reading; Power Supply DC 1.