网页2015年4月28日 · Before the demonstration. Less than 20 minutes beforehand, preferably. Make a solution of 0.05 g of methylene blue in 50 cm 3 of ethanol (0.1%). Weigh 8 g of potassium hydroxide into the 1 dm 3 conical flask. Add 300 cm 3 of water and 10 g of glucose and swirl until the solids are dissolved. Add 5 cm 3 of the methylene blue solution.
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网页2018年3月1日 · Select the Nalgene dilution bottle that works for you Nalgene dilution bottles make 1/10 and 1/100 dilutions simple. Graduated at 90mL and 99mL, with plenty of head space for reagent additions after dilution, often eliminating the need to transfer diluted samples to another container for further process steps.
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网页Unit price (500ml, blue cap, transparent): US $ 1.34 / Piece Delivery fee is not included Reagent bottles, also known as media bottles or graduated bottles, are containers made of glass, plastic , borosilicate or related substances, and topped by special caps or stoppers and are intended to contain chemicals in liquid or powder form for. Chat Now.
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网页2019年11月5日 · They are one of the most common and useful pieces of chemistry lab glassware. Most erlenmeyer flasks are made of borosilicate glass so that they can be heated over a flame or autoclaved. The most common sizes of erlenmeyer flasks probably are 250 ml and 500 ml. They can be found in 50, 125, 250, 500, 1000 ml.
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网页Reagent Bottle with Blue Screw Cap Ask a question about this product Description Containers topped by stoppers used to store chemicals. The amber tint protects light