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- ºê·£µå À̸§: LZQLY
- ±Ù¿ø: CN (Á¤Ç°)
- Áõ¸í¼: NONE
- Name: Volumetric flask
- Material: High borosilicate glass
- Size: As showing
- Color: Transparent
- Specifications: 25-250ml
- Tolerance: As showing
- Advantage01: High temperature and corrosion resistance
- Advantage02: High transparency / easy to observe the experimental process and results
- Application: Chemical experiment / chemical instrument / chemical laboratory consumables / prepare accurate solution with a certain amount and concentration of substances
¿É¼ÇÁ¤º¸[(100018786)25ml (3pcs)][(350852)50ml (3pcs)][(29)100ml (2pcs)][(193)200ml (1pcs)][(366)250ml (1pcs)]
Specification Name£ºVolumetric flask Material£ºHigh borosilicate glass Size:As showing Color£ºTransparent Tolerance:£ºAs showing
Goods introduction:£º A volumetric flask is a container with a thin neck and flat bottom, with a grinding mouth and a mark on the neck, indicating that when the liquid concave liquid is tangent to the mark of the capacity bottleneck at the indicated temperature, the volume of the solution is exactly equal to the volume marked on the bottle. The volumetric flask is marked with: temperature, capacity and readability. It is an accurate instrument for preparing an accurate solution with a certain amount and concentration of substances.
Instrument usage£º 1. Check whether the volume of the volumetric flask is consistent with the required requirements 2. Check whether the bottle stopper is tight and watertight Operation method: Put water in the bottle near the marking line, tighten the cork and let the bottle stand upside down for 2min, Use dry filter paper to check along the gap of the bottle mouth to see if there are water droplets exuding, If there is no water leakage, rotate the bottle 180 ¡Æ, plug it tightly and stand upside down to test whether there will be water leakage in this direction
Warning£º 1. The solute cannot be dissolved in the volumetric flask. The solute should be dissolved in the beaker and then transferred to the volumetric flask 2. The total amount of solvent used to wash the beaker shall not exceed the mark of the volumetric flask. If it exceeds the mark, the solution must be prepared again 3. The volumetric flask cannot be heated. If the solvent needs to be heated during the dissolution process, the solution should be transferred after cooling. As the temperature rises, the flask will expand and the measured volume will be inaccurate 4. The volumetric flask can only be used to prepare the solution and cannot store the solution for a long time, because the solution may corrode the bottle and affect the accuracy of the volumetric flask 5. After the volumetric flask is used, it needs to be washed clean, the cork is plugged, and a piece of paper is sandwiched between the cork and the bottle mouth to prevent the cork from sticking to the bottle mouth 6. Volumetric flasks can only be prepared with a certain volume of solution. Generally, four significant values (such as 250.0ml) are reserved. The scale line cannot be estimated or the number after the decimal point can be changed because the solution exceeds or does not reach the scale line. They can only be re prepared, because the volume of the solution must be XXX 0ml 200ml Tolerance: ¡¾ 0.15ml 250ml Tolerance: ¡¾ 0.15ml 500ml Tolerance: ¡¾ 0.25ml 1000ml Tolerance: ¡¾ 0.4ml 2000ml Tolerance: ¡¾ 0.6ml Payment: We accept Alipay here and all major creditcards accepted by Alipay.
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