Description
The Class AS Glass Burette from Osmosis Scientific is the essential choice for laboratories requiring the highest level of volumetric accuracy. Manufactured from superior Boro 3.3 borosilicate glass, this burette offers exceptional chemical resistance and thermal stability, making it ideal for handling aggressive titration reagents.
Designed to meet the rigorous requirements of DIN ISO 385 and USP, these burettes are calibrated “To Deliver” (TD) at 20°C. The Class AS designation provides for a swift delivery of liquid while maintaining precise tolerances, supported by a 30-second waiting time to ensure a consistent meniscus level. The precision-ground glass stopcock is carefully fitted to provide smooth, drop-wise control, which is critical for identifying exact endpoints during sensitive chemical analyses.
To support your lab’s specific traceability needs, we offer these burettes in two certification tiers:
- Batch Certificate: Ideal for general high-accuracy tasks where lot-level traceability is sufficient.
- Individual Work Certificate: Each burette is laser-etched with a unique serial number, providing the ultimate documentation for ISO-certified and pharmaceutical laboratories.
The high-contrast amber enamel graduations are fused into the glass to resist fading from chemical exposure or repeated autoclaving, ensuring the instrument remains a reliable staple in your lab for years.
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, physical damage, wear, or chemical exposure after delivery.
| Capacity (mL) | Division (mL) | Tolerance (± mL) | Pack of | SKU (Batch Cert.) | SKU (Indiv. Cert.) | Enquiry |
|---|---|---|---|---|---|---|
| 10 | 0.05 | 0.03 | 1 | BAS-GS-BC-0010 | BAS-GS-IC-0010 | Enquire Now |
| 25 | 0.1 | 0.05 | 1 | BAS-GS-BC-0025 | BAS-GS-IC-0025 | Enquire Now |
| 50 | 0.1 | 0.05 | 1 | BAS-GS-BC-0050 | BAS-GS-IC-0050 | Enquire Now |
| 100 | 0.2 | 0.1 | 1 | BAS-GS-BC-0100 | BAS-GS-IC-0100 | Enquire Now |
Frequently Asked Questions (FAQs)
- Batch Certificate: This document certifies that a representative sample from a specific manufacturing lot was tested and met the required tolerances. It is suitable for most standard laboratory and educational applications.
- Individual Certificate: Each burette is individually tested and assigned a unique serial number. The certificate provides the exact measurement results for that specific instrument. This is essential for NABL-accredited labs, pharmaceutical QC, and regulated environments requiring full traceability.
While PTFE (Teflon) stopcocks are grease-free, Ground Glass Stopcocks are favored for their:
- Airtight Seal: When properly greased, they provide a superior, vacuum-tight seal that is highly resistant to leakage.
- Chemical Resistance: Pure Borosilicate glass has universal resistance to most titrants, including aggressive solvents that might occasionally affect plastic components.
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