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1.09468

Sigma-Aldrich

Buffer tablets pH 7.2

for preparing buffer solution acc. to WEISE for staining of blood smears

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About This Item

UNSPSC Code:
41116121
NACRES:
NA.21
Pricing and availability is not currently available.

Quality Level

400

form

solid

IVD

for in vitro diagnostic use

pH

7.2 (20 °C in H2O)

bulk density

1000 kg/m3

application(s)

clinical testing
diagnostic assay manufacturing
hematology
histology

storage temp.

2-30°C

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1 of 4

This Item
111373111374524650
Sigma-Aldrich

109468

Buffer tablets pH 7.2

Buffer tablets pH 6.4 for preparing buffer solution acc. to WEISE for the staining of blood smears

111373

Buffer tablets pH 6.4

Buffer tablets pH 6.8 for preparing buffer solution acc. to WEISE for the staining of blood smears

111374

Buffer tablets pH 6.8

PBS Tablets Dissolving one tablet of PBS buffer in 1 liter of deionized H2O yields 140 mM NaCl, 10 mM phosphate buffer, and 3 mM KCl, pH 7.4 at 25°C. Note: 1 each = 10 tablets.

524650

PBS Tablets

form

solid

form

tablet

form

tablet

form

tablet

application(s)

clinical testing
diagnostic assay manufacturing
hematology
histology

application(s)

clinical testing
diagnostic assay manufacturing
hematology
histology

application(s)

clinical testing
diagnostic assay manufacturing
hematology
histology

application(s)

-

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

10-30°C

pH

7.2 (20 °C in H2O)

pH

6.4 (20 °C in H2O)

pH

6.8 (20 °C in H2O)

pH

-

IVD

for in vitro diagnostic use

IVD

for in vitro diagnostic use

IVD

for in vitro diagnostic use

IVD

-

General description

Buffer tablets pH 7.2 - for preparing buffer solution according to Weise for staining of blood smears, are used to prepare buffer solutions according to Weise and pH-buffered staining solutions. Phosphate buffer solutions are used in hematology, for the dilution of staining solutions and for the rinsing steps in the staining process. The buffer tablets acc. to Weise will produce a buffered solution (pH 6.4/pH 6.8/pH 7.2) that stabilizes the staining result and gives reproducible staining results. Buffer solution according to Weise pH 6.4 results in bright-orange stained erythrocytes and differentiated stained cells with nuclei, whereby the erythrocytes are stained orange when using pH 6.8. Buffer solution acc. to Weise pH 7.2 produces grayish stained erythrocytes and intense red-violet stained cells with nuclei.
100 tablets are sufficient for 100 l buffer solution, each produced solution can be stable up to 4 weeks. Buffer tablets according to Weise are IVD products and CE registered. For more details, please see instructions for use (IFU). The IFU can be downloaded from this webpage.

Analysis Note

pH-value (1 tablet in 1 l of water): 7.15 - 7.25
Crushing strength: ≥ 50 N
Disintegration time: ≤ 20 min
Suitability for blood-smear staining: conforms

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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