Round Bottom Wide Neck Borosilicate Glass Boiling Flask with Beaded Rim Capacity:250mL Twenty 10-strip booklets of pH

Twenty 10-strip booklets of pH 1-14 test paper ship in a plastic vial of 200 strips for monitoring acid and alkaline levels in water

Relict xenocrysts in sample record the direction of stress during alteration

Standard rheostat at 16 ohms and 4A with oxidized constantan winding on a vitreous-enameled steel tube

Accurately measure heart activity with the Vernier Go Direct EKG

letting students trace renewable-energy conversion step by step

Round Bottom Wide Neck Borosilicate Glass Boiling Flask with Beaded Rim Capacity:250mL Twenty 10-strip booklets of pHWide neck accepts stir bars, pH probes, and larger volume additions during reflux, with a beaded rim that reinforces the mouth against chipping during repeated stoppering.