Name: E. Leitz Wetzlar - Karl Bürker - 医疗器械 - Bürker 血细胞计数板 - 玻璃, 橡胶, 皮革, 金属
Brand: E. Leitz Wetzlar
Rating: 100 (20 reviews)

Ashley Calvert

解剖模型与医疗设备拍卖

一套不寻常的二十世纪早期 Bürker 造血计腔仪器，与 E. Leitz、Wetzlar 相关，保留在原装配套盒中，附带血液稀释移液管及配件。"}


An uncommon early 20th-century Bürker haemacytometer set associated with E. Leitz, Wetzlar, preserved in its original fitted case with blood-diluting pipettes and accessories.

The Bürker haemacytometer was developed by the German physiologist Karl Bürker (1872–1957) during the early 20th century. Bürker published a series of papers on the development of his improved blood-counting chamber between 1905 and 1913. His design addressed several limitations of earlier haemacytometers and became one of the important instruments of manual clinical haematology.

Before the introduction of automated electronic cell counters, instruments of this type allowed erythrocytes and leucocytes to be counted manually under a microscope. A precisely diluted blood sample was introduced into a chamber of known depth and spread across a finely ruled counting grid, allowing the concentration of cells in a known volume to be calculated.

The glass counting chamber in this set is engraved:

“Tiefe 0,100 mm”
“1/400 & 1/25 qmm”
“Bürker”

The 0.1 mm chamber depth is characteristic of the Bürker system. The design provided two counting areas, permitting duplicate counts, while capillary filling after positioning the cover glass was one of the improvements of Bürker's construction.

The set retains two glass blood-diluting pipettes, identifiable by their coloured beads for the preparation of blood samples prior to counting. Both carry the OKA mark together with D.R.G.M. markings. The pipettes are additionally marked:

OKA 185488
183160 OKA

The precise historical manufacturer represented by the OKA mark has not been established and is therefore not attributed here.

Particularly interesting is the original dealer's plaque attached to the case:

Michał Maruńczak
Kraków – Sławkowska 10
Tel. 2783

Maruńczak operated a specialist medical and laboratory supply business in Kraków. A period advertisement from 1929 documents Michał Maruńczak at exactly Sławkowska 10, Kraków, telephone 2783, describing the business as a wholesale and retail medical supplier offering medical, laboratory, veterinary, surgical and sanitary instruments and equipment.

This surviving dealer identification provides unusually useful provenance for the set and strongly supports a late-1920s date, approximately 1920–1930.

The relationship between Karl Bürker's scientific work and the Leitz works at Wetzlar is also historically documented. Leitz published Bürker's work on haematological measuring instruments during the 1920s, including a 1924 publication on his haemoglobinometer.

The fitted case contains the Bürker counting chamber, the two marked blood-diluting pipettes, rubber tubing with red and white mouthpieces, and associated fittings, as shown in the photographs.

The set remains in attractive historical condition. There are expected signs of age and previous laboratory use, including wear to the fitted case and interior, surface marks and residues to the glass components, and significant ageing and cracking of the original rubber tubing. No attempt has been made to replace these historically appropriate components.

Dimensions of closed case: approximately 16.5 × 9 × 2.5 cm
Total weight: approximately 193 g

A particularly evocative surviving piece of interwar European medical and laboratory history, combining the Bürker blood-counting system with E. Leitz Wetzlar and documented provenance from a specialist medical supplier in Kraków.

The item will be carefully packed and securely protected for safe shipping.

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E. Leitz Wetzlar - Karl Bürker - 医疗器械 - Bürker 血细胞计数板 - 玻璃, 橡胶, 皮革, 金属

德国 1920-1930

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卡尔·布尔克设计的 Bürker Haemacytometer 由爱乐志（E. Leitz Wetzlar）在德国制造，约1920–1930年间生产，状况良好，伴随原装箱及两支血液稀释吸管与附件。

E. Leitz Wetzlar - Karl Bürker - 医疗器械 - Bürker 血细胞计数板 - 玻璃, 橡胶, 皮革, 金属

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卡尔·布尔克设计的 Bürker Haemacytometer 由爱乐志（E. Leitz Wetzlar）在德国制造，约1920–1930年间生产，状况良好，伴随原装箱及两支血液稀释吸管与附件。

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