Description
The Volumetric Pipette, Class B from Osmosis Scientific is an essential tool for laboratories requiring dependable accuracy for routine liquid transfer. Made from premium Boro 3.3 borosilicate glass, this pipette combines structural strength with high chemical resistance. We offer a comprehensive range of sizes to suit every application, including 1 ml, 2 ml, 5 ml, 10 ml, 20 ml, 25 ml, 50 ml, and 100 ml capacities.
Each pipette features a single, permanent graduation mark that defines the specific volume to be delivered. The “To Deliver” (TD) calibration ensures that the liquid volume discharged matches the specified capacity within Class B tolerances. The specialized bulb-style design—found in our larger 25 ml, 50 ml, and 100 ml versions—provides the necessary reservoir for stable suction and controlled delivery, while the smaller 1 ml to 5 ml sizes offer precision for micro-volume tasks.
To enhance laboratory efficiency, these pipettes are marked with standardized color coding, allowing technicians to identify the required capacity at a glance. The markings are printed using durable, high-contrast stain that remains legible even after repeated cleaning and autoclaving cycles.
Whether you are performing standard solution preparation in a 10 ml size or bulk titration with a 50 ml pipette, the Osmosis Scientific Volumetric Pipette delivers the reliability and longevity expected of professional-grade glassware. Its robust construction ensures superior thermal shock resistance, making it a staple for any high-functioning laboratory environment.
| Capacity (mL) | Tolerance (± mL) | Color Code | Pack of | SKU | Enquiry |
|---|---|---|---|---|---|
| 0.5 | 0.012 | 2 Black | 5 | VPCB-0005 | Enquire Now |
| 1 | 0.012 | Blue | 5 | VPCB-0010 | Enquire Now |
| 2 | 0.012 | Orange | 5 | VPCB-0020 | Enquire Now |
| 3 | 0.020 | Black | 5 | VPCB-0030 | Enquire Now |
| 4 | 0.020 | 2 Red | 5 | VPCB-0040 | Enquire Now |
| 5 | 0.020 | White | 5 | VPCB-0050 | Enquire Now |
| 6 | 0.030 | 2 Orange | 5 | VPCB-0060 | Enquire Now |
| 7 | 0.030 | 2 Green | 5 | VPCB-0070 | Enquire Now |
| 8 | 0.040 | Blue | 5 | VPCB-0080 | Enquire Now |
| 9 | 0.040 | Black | 5 | VPCB-0090 | Enquire Now |
| 10 | 0.040 | Red | 5 | VPCB-0100 | Enquire Now |
| 15 | 0.060 | Green | 5 | VPCB-0150 | Enquire Now |
| 20 | 0.060 | Yellow | 5 | VPCB-0200 | Enquire Now |
| 25 | 0.060 | Blue | 5 | VPCB-0250 | Enquire Now |
| 30 | 0.060 | Black | 5 | VPCB-0300 | Enquire Now |
| 40 | 0.100 | White | 5 | VPCB-0400 | Enquire Now |
| 50 | 0.100 | Red | 5 | VPCB-0500 | Enquire Now |
| 100 | 0.160 | Yellow | 5 | VPCB-1000 | Enquire Now |
Frequently Asked Questions (FAQs)
The primary difference lies in the tolerance levels (the maximum allowable error).
- Class A: Higher precision, tighter tolerances, and often required for analytical chemistry and NABL-certified labs.
- Class B: Generally has twice the error tolerance of Class A. They are more affordable and perfectly suited for routine school, college, and industrial liquid transfers.
The bulb allows the pipette to hold a larger volume of liquid while keeping the neck narrow. A narrow neck ensures that even a tiny change in volume results in a visible move in the meniscus, allowing for more accurate filling to the graduation mark.
- Fill: Use a pipette filler (bulb or pump) to draw liquid slightly above the graduation line.
- Adjust: Wipe the exterior tip with a lint-free tissue. Slowly lower the liquid until the bottom of the meniscus touches the mark.
- Drain: Touch the tip against the side of the receiving vessel and let the liquid flow out naturally.
- The Last Drop: Do not blow out the small amount of liquid remaining in the tip. Volumetric pipettes are calibrated “To Deliver” (TD or Ex), meaning the volume remaining in the tip is already accounted for in the calibration.
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