10-100x 20ml Glass Test Tubes With Cork Candy Party Wedding Reusable

The wood cork affords simple opening and closing.These test tubes were produced with the intention of easy manipulation within a laboratory setting. – Glass test tubes, round bottom with wood cork, they are easy to fill and the lids fit tightly, no leaks.

Laboratory Weighing Funnel Multi-use Weighing Funnel Glassware

Compared to traditional weighing pans, the size of the opening of the weighing funnel is perfect for transferring, very easy to use and practical. – Flexible weighing funnel with smooth surface provides accurate pouring while minimizing sample loss.