10-Pack Unknown Composition Soda Ash Sodium Carbonate Samples, 100g Each, Varying Purities 20-50% Subcategory_Flame Tests sized for 20 to 22

sized for 20 to 22 mm tubes and resistant to lab reagent splashes on classroom benches

setting UV sanitization cycle duration and restoring full cabinet function when the original switch fails under classroom use

15 stirring sticks

sized as a generic spare in the PH1118 demonstration-meter scale series for swap-in classroom use

10-Pack Unknown Composition Soda Ash Sodium Carbonate Samples, 100g Each, Varying Purities 20-50% Subcategory_Flame Tests sized for 20 to 22Used to develop quantitative analysis technique on unknown soda ash samples, this 10 pack of 100g sodium carbonate samples spans 20 50% purity for analytical chemistry investigation practice.