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Glass graduated cylinder (volumetric, transfer type)

Borosilicate glass graduated cylinders are widely used in laboratories, the chemical industry, pharmaceuticals, education, and many other fields. They are indispensable basic instruments for quantitative liquid measurement, available in both standard open‑ended and stoppered versions, with capacities ranging from 5 mL to 2000 mL to meet diverse dispensing requirements.

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Glassware and Measuring Instruments

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Glass graduated cylinder (volumetric, transfer type)

Description

Product Introduction:

High-borosilicate glass graduated cylinders are widely used in laboratories, the chemical industry, pharmaceuticals, education, and many other fields. They are indispensable basic tools for precise liquid measurement and come in two types: standard open‑ended models and stoppered versions. Available in a full range of capacities from 5 mL to 2000 mL, they meet diverse dispensing needs across various applications. The products are manufactured using an integrated high‑borosilicate glass molding process, resulting in thick, uniformly thick walls free of bubbles or cracks. With a light transmittance exceeding 92%, they allow for clear reading of the meniscus, ensuring accurate volume measurements. The graduation lines are applied via a high‑temperature sintering process, offering sharp, durable markings that resist fading and chemical dissolution. Different capacity specifications correspond to distinct scale divisions, with measurement accuracy meeting Class A standards to guarantee reliable and precise results. The cylinder features a tall, cylindrical shape with a spout on one side of the upper rim for easy pouring, and a wide base for stable support. Graduations are printed along the wall from bottom to top, indicating volumes at a temperature of 20°C. When taking readings, be sure to align your line of sight with the liquid’s…

The lowest point of a concave meniscus (or the highest point of a convex meniscus) is at the same level.

Graduated cylinder: Marked “In,” fill the dry graduated cylinder with water up to the desired graduation line; the volume indicated by that line is the capacity of that graduation.

Graduated cylinder: Marked “Ex,” fill the cylinder to the desired graduation mark, then empty it; the volume of liquid discharged after inverting the cylinder for 30 seconds corresponds to the capacity of that graduation mark.

Precautions:

1. It cannot be used as a reaction vessel.

2. Do not heat: Heating can cause deformation, thereby compromising accuracy—especially with repeated, prolonged heating or exposure to high temperatures.

3. Do not dilute concentrated acids or bases: Although glass is an inert material, it is not entirely inactive. Certain strong acids and strong bases—especially strong bases—can still corrode it.

4. Cannot store potions.

5. Hot solutions must not be measured: Measuring hot or cold liquids will result in inaccurate readings.

6. Do not use scouring powder to clean, as it may scratch the scale; scrubbing will wear down the inside of the graduated cylinder.

The wall causes a change in the volume of the liquid inside the graduated cylinder, thereby affecting its accuracy.

7. No need for rinsing: Sometimes, after pouring, we notice significant liquid clinging to the walls of the graduated cylinder and assume that not enough has been dispensed, so we repeatedly rinse the cylinder with solvent or other methods. In fact, this practice is also incorrect, because the graduated cylinder is designed as a “volumetric” instrument.

From the very beginning, we accounted for the liquid adhering to the walls of the graduated cylinder; this portion of volume was included in our calculations, so the volume poured out is precisely the volume we need.

Technical Specifications:

Specifications	Graduation value (ml)	Tolerance value (ml)	Quantity/Box	Quantity/pieces
5ml	0.1ml	±0.05	20 per box	240/piece
10ml	0.2ml	±0.10	10 per box	180 per piece
15ml	0.5ml	±0.25	10 per box	180 per piece
20ml	0.5ml	±0.25	6 per box	180 per piece
25ml	0.5ml	±0.25	6 per box	180 per piece
50ml	1ml	±0.25	6 per box	90/piece
100ml	1ml	±0.50	4 per box	80/piece
200ml	5ml	±1.0	2 per box	32/piece
250ml	5ml	±1.0	2 per box	32/piece
500ml	5ml	±2.5	2 per box	18/piece
1000ml	10ml	±5.0	1/box	15/piece
2000ml	20ml	±10	1/box	6/piece

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Glass graduated cylinder (volumetric, transfer type)

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