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Test Tube pH Pen
Product Number: SB52136
In Stock (Ships within 1-2 business days)
Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation, this pH reader fits into standard test tubes 16 x 50 mm or larger. Automatically calibrates to pH 4, 7, and 10 buffers and can be adjusted to recognize any buffer. Features a hold function, auto power off, low battery indicator, waterproof case, and built-in electrode kept moist with a protective cap. Requires two button-cell batteries (included).