Set of 2 Graduated Test Tube 30ml Capacity PH Meter & TDS Meter Comprising a polished wooden box

Comprising a polished wooden box with a ground glass screen at the rear end and an adjustable sliding front with a hole

You Can Calibrate the Tester with One Touch Button Using Buffer Powder

and each can be zeroed with the metal nut located at the top

Please choose size

with a melting point exceeding 300°C

Set of 2 Graduated Test Tube 30ml Capacity PH Meter & TDS Meter Comprising a polished wooden boxIncluded: Set of 2 Graduated Test Tube 30ml Capacity Heavy Duty Borosilicate Graduated Glass. Autoclavable, with superior chemical durability. Low temperature gradient can withstand high temperatures & thermal shocks. Premium Quality: Glassware is made of high quality, heavy duty, Borosilicate 3. 3 glass. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with