Test Tube pH Pens Please Select an Option::850066 | Test Tube pH Pen w/Flat Tip you must try to match

you must try to match the input speed to the output speed

Superior Carbon Quality: Spider Farmer carbon filters make use of the highest grade

How to read the TDS

a hidable backlit display

plain and simple

Test Tube pH Pens Please Select an Option::850066 | Test Tube pH Pen w/Flat Tip you must try to matchFits standard test tubes 16 x 50 mm or larger. Highly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize some other non standard buffers as well. Features hold function, and auto power off with low battery indicator. General Purpose Glass Probe: EPA compliant for labs and wine Penetration Probe: for food & soil Flat Tip