Phenol Red Solution, 1.0%, 500mL, Laboratory Grade Pack Size_14 Length-adjustable wooden pendulum simple-machine model

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

The includes screw cap has a built in leak-proof ring seal

the oxidizer for whole-class catalase demos

Plain bend receiver adapter in borosilicate glass features 19/26 socket and 19/26 cone for distillation collection with right-angle redirection

Phenol Red Solution, 1.0%, 500mL, Laboratory Grade Pack Size_14 Length-adjustable wooden pendulum simple-machine modelConcentrated 1 percent phenol red indicator, supplying sharper color transitions across the 6. 8 to 8. 2 pH range when sample volumes are small.