Consumables

The Premium Class A Glass Volumetric Pipette (also known as a Bulb Pipette or One-Mark Pipette) is a high-accuracy transfer instrument essential for analytical chemistry, quality control laboratories, and clinical testing. It is specifically designed to measure and deliver a single, highly precise volume of liquid under standard temperatures.

Structurally, the pipette consists of a central bulbous enlargement—engineered to increase the liquid storage capacity—flanked by slender glass tubes at both the upper and lower ends. The upper stem features a permanent, hand-calibrated ring mark representing the designated volume. Because the lower stem is drawn into a fine, tapered discharge tip with a very small cross-sectional area, gravity-driven fluid outflow is highly stabilized, and drainage volume variation is strictly kept at a minimum. Crafted from chemically resistant, thermal-shock-proof borosilicate glass, this transfer pipette easily accesses narrow-mouth containers and volumetric flasks, ensuring reliable volumetric precision that easily passes strict regulatory inspections.

Exceptional Measurement Precision: Class A accuracy standard ensures extremely low volumetric tolerances. The ring-shaped graduation mark on the narrow upper neck is permanently fired into the glass, offering precise meniscus alignment for critical titrations.

Comprehensive Sizing Range: Available in a full spectrum of specifications from micro-volume 1ml up to large 100ml capacities, providing a highly versatile and professional solution for diverse fluid handling workflows.

High Light Transmittance: Crafted from optical-grade, premium laboratory glass with superb clarity. This exceptional transparency allows analysts to easily monitor the meniscus and ensure no bubbles or impurities are trapped inside.

Optimized Low-Tolerance Structure: Designed with a narrow, long lower stem that dramatically reduces the cross-sectional area of the liquid column, minimizing volume errors and guaranteeing the highest standard of accuracy.

Tapered Elongated Discharge Tip: Features a slender, tapered tip that easily reaches into deep flasks, narrow-neck volumetric flasks, and small containers, ensuring smooth, drop-controlled gravity delivery.

Technical Specifications