Test Tube pH Pens Please Select an Option::850066 | Test Tube pH Pen w/Flat Tip Quantanium Tumbler Upgrade: These machines

Quantanium Tumbler Upgrade: These machines are purposely designed to process both wet and dry plants

and temperature measurements are simultaneously displayed on three backlit LCDs which can be easily viewed at a distance—even in low light

setup and modifications to your grow schedules will never be easier

Made from Extra Strength recycled plastic

it can be used from seedling to harvest

Test Tube pH Pens Please Select an Option::850066 | Test Tube pH Pen w/Flat Tip Quantanium Tumbler Upgrade: These machinesFits 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