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vertical display
The sphere powered by the sun
and then the ball at the other end is propelled outward
easy-read with large numbers
Top of range in its class - ie digital weather stations that do everything except wind and rain
ph Buffer Solution Ornamental Instrument vertical displayYou'll need refills of these to perform repeat or multiple ph measures using the meter sold separately. Handy temperature conversion chart on label (pH varies with temperature). Pottle is 6. 5 cm high by 3 wide. Buffer solution and meters enable measurements to within 0. 02.
US$ 14.99
US$ 42.90
US$ 39.90
US$ 33.85
US$ 55.00
US$ 55.00
