Buffere

Buffere modstår pH-ændringer og beskytter prøver, når der tilsættes syrer eller baser. Pulver- og flydende former sporer effektivt proteiner under elektroforeseisolering og -separation. Saltbufferne kan også bruges til at kalibrere og standardisere pH-metre for nøjagtige aflæsninger. Blokerende stoffer forhindrer antistofbinding til membranfri steder, der ville producere en interfererende baggrund. Buffere kan fås i flydende eller dehydrerede formater i forskellige koncentrationer, der passer til ethvert behov.

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Buffers, concentrated solutions, Titrisol®, Supelco®

Supplier: Merck

Titrisol® buffer concentrate for 500 ml buffer solution [20 °C].

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Buffer, di-Sodium hydrogen phosphate solution 0,066 M, pH 9,2, Supelco®

Supplier: Merck

Buffer stock solution 1/15 mol/l

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Phosphate Buffer Solution

Supplier: SIGMA ALDRICH MICROSCOPY

Contains sodium and potassium phosphates. Intended for use in the Sigma Butyrate Esterase Procedure, No. 181B.

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Phosphate Buffer, pH 6.6 at 25 °C

Supplier: SIGMA ALDRICH MICROSCOPY

Phosphate buffer's buffering capacity is pH sensitive and is preferred to be used at physiological pH (7,2 to 7,4).

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Borate buffer for HPLC, LiChropur™, Supelco®

Supplier: Merck

Borate buffer, 0.127 - 0.140 M

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Ionic strength adjustor buffer solution for fluoride electrode, Supelco®

Supplier: Merck

It may be used as TISAB buffer in determination of fluoride in coal, coal fly ash, phosphate rock, limestone, mineral clay, fossilised materials, oyster tissue and vegetation using pyrohydrolysis for sample decomposition.

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pH buffers, colour coded, reference standards, Supelco®

Supplier: Merck

pH Buffer solution, colour coded, pH-værdi: 4,00, ±0,01, Referencetemperatur: 25 °C, rød, I dispenser, 1×gallon

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Buffer solutions in sachets, Certipur®, Supelco®

Supplier: Merck

Til kalibrering af pH-metre.

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Buffer solutions, Certipur®, ready to use, 1 litre bottles, Supelco®

Supplier: Merck

Materialer til præcis kalibrering og kontrol af pH-instrumenter.

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TISAB II Solution, Supelco®

Supplier: Merck

TISAB, in general, is mixed with samples, as it helps in maintaining the ionic strength and pH constant. It is mainly used to decomplex metal-F complexes.

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VWR® UltraPure, Phosphate buffered saline (PBS), powdered

Supplier: VWR Chemicals

PBS, Ultra Pure Grade is a powdered, magnesium- and calcium-free formulation of PBS suitable for cell culture and for use in flow cytometry applications.