Product Description
A screw cap seal keeps standards and reagents from evaporating or picking up contaminants between uses, something a loose stopper cannot always guarantee. These Class A volumetric flasks combine certified accuracy with a secure threaded closure for preparing and storing solutions.
This listing is for Kimble catalog number 621600-0025: KONTES Volumetric Flask, Class A, with Screw Cap,25 mL. Each flask complies with ASTM E288 Class A and is calibrated to contain. They are made from borosilicate glass 3.3 and supplied with a phenolic screw cap with a PTFE-faced rubber liner. Threads are 13-425, 20-400 or 28-410 depending on size, and capacities run from 5 mL to 2000 mL. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- ASTM E288 Class A – Meets the tolerance requirements for Class A volumetric flasks.
- Calibrated to contain – Accurate volumes for standards and solution preparation.
- PTFE-lined screw cap – Leak-resistant seal limits evaporation and contamination.
- Borosilicate 3.3 glass – Chemically durable and resistant to thermal shock.
- Nine capacities – 5 mL through 2000 mL.
Specifications
| Catalog Number | 621600-0025 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Volumetric Flask, Class A, with Screw Cap,25 mL |
| Sold As | Each |
| Material | Borosilicate glass 3.3 |
| Standard | ASTM E288, Class A |
| Calibration | To contain (TC) |
| Closure | Phenolic screw cap with PTFE-faced rubber liner |
| Thread | 13-425; 20-400; 28-410 |
Available Options
- 621600-0005 – KONTES Volumetric Flask, Class A, with Screw Cap, 5 mL
- 621600-0010 – KONTES Volumetric Flask, Class A, with Screw Cap,10 mL
- 621600-0050 – KONTES Volumetric Flask, Class A, with Screw Cap, 50 mL
- 621600-0100 – KONTES Volumetric Flask, Class A, with Screw Cap, 100 mL
- 621600-0250 – KONTESVolumetric Flask, Class A, with Screw Cap, 250 mL
- 621600-0500 – KONTES Volumetric Flask, Class A, with Screw Cap, 500 mL
- 621600-1000 – KONTES Volumetric Flask, Class A, with Screw Cap, 1000 mL
- 621600-2000 – KONTES Volumetric Flask, Class A, with Screw Cap, 2000 mL
Applications
- Analytical standard preparation
- Titrant and reagent preparation
- Quality control testing
- Sample dilution
- Solution storage
