The Z207-HEM-RD is the capillary reading disc for the Hermle Z207-H Hematocrit Centrifuge — the small clinical accessory used to read packed-cell-volume (PCV / hematocrit %) from sealed capillary tubes after the spin completes. After the Z207-H spins 24 capillaries to separate red cells from plasma, the reading disc is used to measure the packed-red-cell column length as a fraction of total column length, producing the hematocrit percentage. This is the workflow's measurement step — the centrifuge separates, the reading disc reads.
Voltage options: This unit can be ordered with European voltage requirements (230V/50Hz). Contact us to order.
Key Specifications
| SKU | Z207-HEM-RD |
| Type | Capillary reading disc — clinical-measurement accessory |
| Compatible centrifuge | Z207-H (Hermle Hematocrit Centrifuge) |
| Workflow stage | Post-spin packed-cell-volume reading |
| Measurement | Hematocrit (PCV) percentage from capillary tube |
How the Reading Disc Fits the Hematocrit Workflow
A complete hematocrit determination is a 3-step workflow:
- Capillary fill and seal — operator fills a heparinized hematocrit capillary tube with whole blood and seals one end with hematocrit sealing clay or heat seal.
- Spin — capillary loaded into the Z207-H rotor (24 positions) and spun at 13,000 rpm for the protocol-specified duration (typically 5 minutes). Centrifugal separation produces a packed red cell layer at the sealed end and plasma at the open end, with a buffy-coat boundary.
- Read — capillary placed against the Z207-HEM-RD reading disc, which has graduated markings that align the packed-cell-column length to the hematocrit percentage scale. Operator reads the percentage directly without manual measurement and calculation.
Without the reading disc, the operator would manually measure the packed-cell column with a ruler and calculate the hematocrit ratio — slower, less reproducible, more error-prone. The reading disc is the measurement-step efficiency tool.
Frequently Asked Questions
What is the Z207-HEM-RD? A capillary reading disc for the Hermle Z207-H Hematocrit Centrifuge — used to read packed-cell-volume (hematocrit %) directly from spun capillary tubes.
Which centrifuge does the reading disc work with? The Z207-H specifically; it is not used with other Hermle centrifuges.
Is the reading disc a consumable? No — it is a measurement instrument covered by the standard Hermle warranty, not a consumable.
Do capillary tubes come with the Z207-HEM-RD? No — hematocrit capillary tubes and sealing clay are operator-supplied consumables from clinical-supply vendors.
Ordering & Configuration
Compatible centrifuge — Z207-H Hermle Hematocrit Centrifuge. This accessory pairs specifically with the Z207-H workflow; not used with other Hermle centrifuges.
Z207-HEM-RD ships as the reading disc. Capillaries and sealing clay are operator-supplied consumables (hematocrit capillary tubes and sealing clay are commodity clinical supplies available from major clinical-supply distributors).
Small accessory; standard parcel shipping.
Warranty: Manufacturer's standard Hermle warranty applies on the reading disc itself (the disc is a measurement instrument, not a consumable).
Hematocrit workflow consumables note: the Z207-H + Z207-HEM-RD combination is the centrifugation + reading toolset. Capillary tubes and sealing clay are consumables purchased separately from clinical-supply vendors — confirm capillary OD against the Z207-H rotor's capillary-position spec at order if using non-standard hematocrit capillary formats.
