This hematocrit centrifuge spins blood-filled capillary tubes at up to 13,000 RPM so that packed cell volume (hematocrit) can be read quickly. A microprocessor sets the speed from 2,000 to 13,000 RPM in 100 RPM steps and runs a 0–99 minute digital timer, while a 2-line LCD shows RPM, RCF, set time and run time. The compact body is injection-moulded plastic with a stainless steel inner safety bowl, and the micro hematocrit rotor holds 24 capillaries. Capillary tubes, a reading device and sealing wax are supplied.

Key features

• Maximum speed 13,000 RPM
• Speed preset by microprocessor from 2,000 to 13,000 RPM in steps of 100 RPM
• Microprocessor-based digital timer, 0–99 minutes
• 2-line, 16-character LCD showing RPM, RCF, set time and run time
• Recalls the last test parameters and shows them on the LCD
• Stainless steel inner safety bowl
• Well-balanced universal motor with high-grade carbon brushes for long life
• Compact injection-moulded plastic body

Technical specifications

Frequently asked questions

What is a hematocrit centrifuge used for?

It spins blood in thin capillary tubes so the red cells pack at one end, and the packed cell volume (hematocrit) can then be read against a scale. It is used in clinical and pathology laboratories.

Which capillary tubes does it use?

The rotor takes capillary tubes of 75 mm length and 1 mm bore. Packs of 100 heparinised and 100 non-heparinised tubes are supplied.

How many capillaries can I spin at once?

The micro hematocrit rotor holds 24 capillaries, or 12 capillaries if you load the alternate positions. Always balance the load around the rotor.

What is the difference between heparinised and non-heparinised capillaries?

Heparinised tubes contain an anticoagulant and are used to collect blood straight from a finger-prick or a sample without anticoagulant. Non-heparinised tubes are used with blood that already contains an anticoagulant, for example in an EDTA tube.

What speed and time should I set?

Follow your laboratory protocol. Microhematocrit methods usually spin at high speed for about 5 minutes, and the speed can be set from 2,000 to 13,000 RPM in steps of 100 RPM, with a timer of up to 99 minutes.

How do I read the hematocrit after spinning?

Place the capillary on the reading device with the bottom of the red cell column at the zero line and the top of the plasma at 100 %. The line that crosses the top of the red cell column gives the hematocrit.

What is the sealing wax for?

Before spinning, one end of each capillary is pushed into the sealing wax to close it, so the blood stays in the tube. Load the sealed end outward in the rotor.

How do I convert RPM to RCF (g-force)?

The LCD shows RCF directly. You can also calculate it with RCF = 1.118 × 10⁻⁵ × radius (in cm) × RPM².

How should I look after it?

Keep the rotor and bowl clean and dry and wipe away blood spills at once with a disinfectant. The carbon brushes of a universal motor wear with use, so have them checked at regular intervals.

Can I get a GST invoice and a bulk or institutional quotation?

Yes. Labmart supplies colleges, hospitals, pharma companies and government laboratories across India and issues a GST invoice with every order. For bulk or institutional quantities, send us the size and quantity you need and we will share a quotation.