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These Erlenmeyer flasks feature heavy-duty rims to reduce chipping, white, permanent graduations, and large marking squares. Made from high-quality borosilicate tubing with a low coefficient of expansion. $19.00 - $56.00 | This stirrer hot plate has the ability to heat and stir simultaneously or you can perform each function separately. Stirrer hot plate can carry out precise stable stirring of liquid even at high speeds. Now: $249.00 | The SB1200 School Balance is the ideal teaching tool to introduce intermediate students to precision mass measurement. Now: $37.00 |