Kimble Hematocrit Tubes and Critoseal
Hematocrit Testing Solutions for Blood Analysis Labs
Hematocrit determination measures the percentage of red blood cells in whole blood and is a routine test in hematology, clinical, and research laboratories. Kimble Standard Hematocrit Tubes provide reliable, consistent results. Available in plain soda lime glass or heparinized capillary tubes, they come conveniently packaged in re-closable plastic vials with snap-lock caps to maintain cleanliness and prevent contamination during storage.
Two sealing options ensure compatibility with your lab workflow: flame sealing for permanence, sealing clay (Critoseal) for easy removal, or patented caps for hands-free operation. Borosilicate glass is available as a special order for labs requiring enhanced heat resistance. Weber Scientific stocks these essential hematology supplies with fast delivery and reliable inventory. Sign in to your account or contact your sales rep for organizational pricing on bulk orders.
Key Features
- Constructed from soda lime glass for clarity and chemical inertness, ensuring accurate visual reading and preventing sample contamination
- Borosilicate glass versions available as special order for labs requiring higher thermal stability
- Heparinized capillary tubes treated with Ammonium Heparin anticoagulant to prevent blood clotting during collection and measurement
- 75mm standard length fits all centrifuge capillary tubes and microhematocrit readers
- Packed in re-closable snap-lock vials to protect tubes during storage and shipping
- Plain and heparinized options allow flexibility in collection and analysis protocols
- Packs of 200 provide convenient restocking for active labs
Frequently Asked Questions: Hematocrit Tube Selection & Use
What's the difference between plain and heparinized tubes?
Plain tubes are used when you're collecting blood that will clot (useful for serum work). Heparinized tubes prevent clotting and are standard for hematocrit and most blood analysis.
Can I use these for other microhematocrit tests besides percent RBC?
Yes. These tubes are used for various capillary sampling and microcentrifuge applications. The 75mm length and 1-2mm diameter accommodate most standard microhematocrit readers.
Do I need to use Critoseal or can I use regular sealing clay?
Critoseal is formulated specifically for hematocrit tubes and provides a secure seal that won't leak during centrifugation. Regular clay may not seal adequately.
How many tubes do I typically need per patient/sample?
Standard protocol uses 2 tubes per sample (run in duplicate for accuracy). A pack of 200 supports about 100 samples.
Are borosilicate tubes worth the extra cost?
Borosilicate resists thermal stress if you're heating samples or using high-temperature centrifugation. For standard room-temperature work, soda lime glass is sufficient and more economical.
| Item No. | Alt. Part No. | Product Description | Unit of Measure | Your Cost | Purchase |
|---|---|---|---|---|---|
|
TUBE MICRO HEMATOCRIT 200/PK
CHA2501
|
EF2003H | 75mm Heparinized | Pack of 200 |
$109.15
|
|
|
TUBE MICRO HEMATOCRIT 200 PK
CHA2502
|
EF2003 | 75mm Plain | Pack of 200 |
$15.70
|
