{"product_id":"volumetric-flasks-1000ml-grade-b-pack-of-2","title":"Volumetric Flasks 1000ml Grade B Pack of 2","description":"\u003ch2\u003eTwo litre-size volumetric flasks, tolerance plus or minus 0.80ml\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e1000ml Grade B borosilicate volumetric flasks with polyethylene stoppers. Pack of 2 for $60.00.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA volumetric flask does one job precisely: it holds exactly the stated volume when filled to the line. That is what standard solutions and accurate dilutions need, and it is why a beaker or a measuring cylinder will not do.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTolerance is plus or minus 0.80ml on 1000ml\u003c\/strong\u003e - Grade B, which is the standard grade for school and general laboratory work. It is calibrated \u003cem\u003eto contain\u003c\/em\u003e 1000ml at 20 degrees C.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNever heat one.\u003c\/strong\u003e The supplier is explicit: volumetric flasks must not go on a hotplate or over a bunsen. Heating changes the glass volume and the calibration goes with it. Dishwashers and autoclaving at 121 degrees C are fine and do not affect accuracy.\u003c\/p\u003e\u003cp\u003eThe stoppers are chemical-resistant polyethylene to DIN 12664 with a 24\/29 socket. Read the meniscus with the flask vertical and the line at eye level - parallax is the biggest source of error in practice, well ahead of the flask itself.\u003c\/p\u003e","brand":"MTA Essentials","offers":[{"title":"Default Title","offer_id":53793063666027,"sku":"EVEIS0448I","price":60.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2795\/8891\/files\/eis0448i_volumetric-flask-glass-1000ml-p2_v1_1.webp?v=1788358272","url":"https:\/\/megaofficesupplies.com.au\/products\/volumetric-flasks-1000ml-grade-b-pack-of-2","provider":"Mega Office Supplies","version":"1.0","type":"link"}