Send the following on WhatsApp
Continue to ChatGlass Conical Centrifuge Tubes Graduated Interchangeable Stopper https://www.scienceequip.com.au/products/conical-centrifuge-tubes-graduated-interchangeable-stopper
Glass Conical Centrifuge Tubes Graduated Interchangeable Stopper https://www.scienceequip.com.au/products/conical-centrifuge-tubes-graduated-interchangeable-stopper