Oven laboratory manufacturers guide you through the calibration process of pipettes. Begin by taking a 50 mL stoppered conical flask that has been dried externally and place it on a balance with third decimal precision. Using the pipette to be calibrated, transfer pure water into the flask. Weigh the flask along with the water, then subtract the weight of the empty flask to determine the mass of the water dispensed. At the same time, measure the temperature of the water and refer to Table II for correction factors. Calculate the volume of the pipette at 20°C. Repeat the procedure once, ensuring that the difference between the two measurements does not exceed 0.02 mL.
For relative calibration between a volumetric flask and a pipette, wash and dry a 250 mL volumetric flask. Then, use a 25 mL pipette to transfer pure water into the flask ten times. If the bottom of the water's meniscus does not align with the graduation mark on the flask, adjust the marking so that it touches the meniscus precisely. Once properly calibrated, the pipette and volumetric flask can be used together with confidence.
HUMGINE offers a wide range of laboratory equipment including high and low temperature damp heat test chambers, constant temperature and humidity chambers, nitrogen-filled vacuum ovens, high-temperature vacuum drying ovens, low-temperature testing boxes, vacuum degassing boxes, AB glue degassing machines, and drying cabinets. These tools are essential for precise and reliable lab operations. Whether you're conducting calibration tests or environmental simulations, HUMGINE provides the quality and performance needed to meet your laboratory requirements.
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