Description
Pyrex 250ml volumetric flask
| Parameter | Specification |
| Brand | PYREX (Corning) |
| Capacity | 250 mL |
| Tolerance (Class A) | ±0.12 mL |
| Calibration Temperature | 20°C |
| Material | Borosilicate glass (PYREX Code 7740) – high thermal & chemical resistance |
| Graduation | Permanent etched single line with large white block letters for easy reading |
| Neck Type | Long neck with heavy-beaded, heavy-tubing finish |
| Stopper Size | No. 16 Standard Taper (glass stopper) |
| Closure Options | Glass stopper (standard), polyethylene snap-cap, or PTFE stopper (available) |
| Bottom Design | Flat bottom for stability Pyrex 250ml volumetric flask |
| Approximate Height | 252 mm |
| Approximate Outer Diameter | 78 mm |
| Standards Compliance | ASTM E-694, E-542, E-288 (Class A volumetric glassware) |
| Typical Catalog Number | 5640-250 (with glass stopper) |
| Primary Use | Precise preparation and dilution of standard solutions, titrations, analytical work |
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