ESR Tubes 4.5 x 230mm Polystyrene, 0–170mm Scale, Rubber Stopper, 200 Pcs Tube

Clinical and laboratory environments that perform erythrocyte sedimentation rate (ESR) testing as part of routine hematological workflows require a reliable, consistently manufactured ESR tube. The 4.5 x 230mm ESR tube is designed to the Westergren method standard, with a transparent polystyrene body, a precisely printed 0–170mm graduated scale at 1mm intervals, and a retention rubber stopper for secure sample containment.

Polystyrene Construction, Clear Optical Clarity

Each tube is manufactured from high-clarity PS (polystyrene), providing the optical transparency needed for accurate visual reading of the sedimentation column against the graduated scale. The rigid PS construction maintains dimensional consistency and tube straightness throughout the incubation period required for the Westergren ESR reading.

0–170mm Graduated Scale, 1mm Minimum Division

The circumferential graduated scale runs from 0 to 170mm with a minimum division of 1mm, providing the resolution required for accurate column height reading. The scale is printed around the tube circumference and remains legible throughout the standard 1-hour incubation period used in Westergren ESR methodology.

Product Specification:

Material: PS (Polystyrene)
Dimensions: 4.5mm OD x 230mm L (0.18" x 9.06")
Graduation: 0–170mm, 1mm minimum division (circumference scale)
Stopper: Rubber retention stopper
Color: Clear / Natural
Blood collection tube compatible: Yes (Westergren method)

Package Includes

Quantity: 2 Packs of 100

Total 200