Alwsci Lab Gas Washing Bottle Glass 500Ml Graduated Lab Buffer Bottle,, 1Set Product Features 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 Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!