Description
The Volumetric Pipette Two Mark, Class AS from Osmosis Scientific is engineered for advanced laboratory workflows where volumetric precision is critical. Unlike single-mark versions, the two-mark design allows for the measurement of liquid between two graduation lines, effectively eliminating potential errors caused by inconsistent liquid retention in the jet tip.
Manufactured in accordance with ISO/DIN standards, this pipette is designed to deliver exact volumes within tight tolerances and is supplied with a batch certificate for traceable quality assurance. Each pipette is crafted from premium Boro 3.3 borosilicate glass, providing the chemical durability and thermal shock resistance necessary for rigorous laboratory environments.
The amber enamel print not only enhances the readability of the two volume markings but also ensures that the graduations remain permanent through repeated sterilization and cleaning cycles. Available in capacities from 1 ml to 100 ml, the Osmosis Scientific Two-Mark Pipette is a reliable choice for pharmaceutical analysis, clinical testing, and industrial research where reproducible accuracy is the priority.
Note: For outsourced or certified products, Osmosis Scientific acts as a supplier and distributor. Certification validity, calibration accuracy, and traceability are the responsibility of the original manufacturer or issuing certification body. Osmosis Scientific shall not be held liable for calibration deviations caused by improper handling, misuse, or chemical exposure after delivery.
| Capacity (mL) | Tolerance (± mL) | Colour Coding Band | Pack of | SKU | Enquiry |
|---|---|---|---|---|---|
| 0.5 | 0.005 | 2 Black | 5 | VP2AS-0005 | Enquire Now |
| 1 | 0.008 | Blue | 5 | VP2AS-0010 | Enquire Now |
| 2 | 0.010 | Orange | 5 | VP2AS-0020 | Enquire Now |
| 3 | 0.010 | Black | 5 | VP2AS-0030 | Enquire Now |
| 4 | 0.010 | 2 Red | 5 | VP2AS-0040 | Enquire Now |
| 5 | 0.015 | White | 5 | VP2AS-0050 | Enquire Now |
| 6 | 0.010 | 2 Orange | 5 | VP2AS-0060 | Enquire Now |
| 7 | 0.010 | 2 Green | 5 | VP2AS-0070 | Enquire Now |
| 8 | 0.020 | Blue | 5 | VP2AS-0080 | Enquire Now |
| 9 | 0.020 | Black | 5 | VP2AS-0090 | Enquire Now |
| 10 | 0.020 | Red | 5 | VP2AS-0100 | Enquire Now |
| 15 | 0.030 | Green | 5 | VP2AS-0150 | Enquire Now |
| 20 | 0.030 | Yellow | 5 | VP2AS-0200 | Enquire Now |
| 25 | 0.030 | Blue | 5 | VP2AS-0250 | Enquire Now |
| 30 | 0.030 | Black | 5 | VP2AS-0300 | Enquire Now |
| 40 | 0.050 | White | 5 | VP2AS-0400 | Enquire Now |
| 50 | 0.050 | Red | 5 | VP2AS-0500 | Enquire Now |
| 100 | 0.080 | Yellow | 5 | VP2AS-1000 | Enquire Now |
Frequently Asked Questions (FAQs)
- One Mark: You fill to the line and drain until the pipette is empty (leaving a small drop in the tip).
- Two Mark: The calibrated volume is contained between two graduation marks (upper and lower). You fill to the top mark and drain only until the liquid reaches the second, lower mark.
The two-mark design is often preferred because it eliminates errors caused by the “last drop” or variations in tip drainage. By delivering the volume between two precise lines on the narrow neck of the glass, the impact of the tip’s physical condition on the final measurement is minimized.
- Fill: Use a pipette filler to draw the liquid slightly above the upper graduation mark.
- Align: Adjust the meniscus precisely to the upper mark at eye level.
- Deliver: Allow the liquid to flow into the receiving vessel.
- Stop: Carefully stop the flow exactly when the meniscus reaches the lower graduation mark.
- Wait: Observe the 15-second waiting time (as marked on the glass) before finalizing the delivery to allow the liquid film to stabilize.
- Clean with a mild laboratory detergent and rinse thoroughly with deionized or distilled water.
- Caution: Ensure the interior is free of grease or residue; if the liquid “beads” on the inner surface, the pipette is not clean and the delivery volume will be inaccurate.
Reviews
There are no reviews yet.