Alwsci Lab Gas Washing Bottle Glass 500Ml Graduated Lab Buffer Bottle,, 1Set Product Details Superior Glass Material: Made of high-purity and clear boroslicate glass 3.3 tubing, with uniform wall thickness and low thermal expansion coefficient Autoclavable: The Reagent Bottle can use on -198C to +500C, the screw PP cap pouring ring can use up to +140C, reusable, enviromental friendly, transparent, easy labeling Multifunctional: Laboratory screw-top gas scrubber can remove impurities in the gas. It can also be used as a buffer bottle in a distillation environment to extend the service life of the vacuum pump Wall Thickness:The thickness of Bottle wall reaches 3.8mm, far exceeding the international level.The uniformity of the wall thickness of the product is more consistent, and the wall thickness error does not exceed 0.1mm. The permeability of the bottle body Better, better aesthetics ?Graduated Bottle?- Easy-to-read scale with graduation marks to estimate the content Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.