Pipette Transfer Volumetric, With One Mark

Pipettes Transfer Volumetric, with One Mark, commonly known as volumetric or bulb pipettes, are premier laboratory instruments engineered for the high-precision transfer of a specific, fixed volume of liquid. Fabricated from premium-grade borosilicate glass, these pipettes feature a central bulb expansion designed to hold the majority of the liquid volume while maintaining slim, narrow upper and lower stems for hyper-accurate calibration readings.

Calibrated to strict Class A or Class B accuracy standards, these transfer pipettes are adjusted "To Deliver" (TD, "Ex") their specified volume under standard reference temperatures. The single, high-contrast permanent ring mark etched or fired onto the upper suction stem ensures rapid and error-free meniscus alignment, making them the gold standard for analytical chemistry and analytical standard solution preparations.

Key Features

• Manufactured from high-purity borosilicate 3.3 glass for maximum structural clarity and chemical resistance
  
• Precisely calibrated "To Deliver" (TD, "Ex") with strict compliance to global volumetric tolerances
  
• Single-volume ring mark features highly durable, fired-on enamel that resists fading from acid washing or autoclaving
  
• Optimized jet and suction tube diameters to ensure standard drainage times and minimize liquid residue retention
  
• Heavy-wall glass construction with reinforced rims to minimize mechanical chipping during filler attachment
• International Standards

Our volumetric transfer pipettes are engineered and manufactured in strict compliance with globally accepted scientific dimensional and quality parameters, ensuring seamless verification for international export and B2B procurement:

• ISO 648 – Laboratory Glassware – Single-Volume Pipettes
  
• ASTM E969 – Standard Specification for Glass Volumetric (Transfer) Pipettes
  
• ASTM E438 – Standard Specification for Glasses in Laboratory Apparatus Manufacturing
• Available in a comprehensive range of capacities (e.g., 1ml, 2ml, 5ml, 10ml, 20ml, 25ml, 50ml, 100ml) with standard international color-coding bands for immediate volume identification. Custom dimensions, batch tracking configurations, and individual laboratory calibration certificates can be provided per bulk commercial requirements.

Applications

Extensively utilized across analytical testing laboratories, pharmaceutical R&D facilities, clinical chemistry lines, water quality analysis stations, environmental monitoring, and academic institutions for preparing serial dilutions and handling high-precision volumetric titrations.

Why Choose Our Products

• Export-grade glassware featuring exceptional optical clarity and thorough thermal annealing to eliminate mechanical stress
  
• Highly reliable calibration lines ensuring adherence to global pharmaceutical and laboratory auditing standards
  
• Smooth, non-porous internal glass matrix designed to minimize liquid retention for consistent, reproducible results
  
• Trusted manufacturing partner for global laboratory equipment catalog vendors, tender bidders, and wholesale scientific suppliers