49532

Micro particles, magnetic, streptavidin coated

1 μm particle size, std dev <0.1 μm

• Synonym(s): Polystyrene beads, magnetic, streptavidin coated
• UNSPSC Code: 41116107
• NACRES: NA.25

Properties

• grade: analytical standard
• Quality Level: 100
• form: aqueous solution
• composition: iron oxide, ≥20%
• concentration: 1% (solids)
• particle size: 1 μm std dev <0.1 μm
• application(s): glass & ceramic; industrial qc; pharmaceutical
• format: neat
• storage temp.: 2-8°C

Description

General description

Streptavidin-coated polystyrene-based magnetic microparticles are a size standard, fit for particle size distribution (PSD) analysis of test samples.
The accurate diameter of 1 μm is determined by methods described by the National Institute of Standards and Technology (NIST, USA), such as:

• Transmission electron microscopy
• Scanning electron microscopy
• Optical microscopy
• COULTER COUNTER particle size analyzer with HDF system.
• The measuring instruments are calibrated using standards obtained from the Community Bureau of Reference (BCR, Belgium: Standards RM 165, 166 or 167) and from the NIST (SRM 1690, 1691 or 1692). This analytical standard product is made up of superparamagnetic polystyrene particles.

Superparamagnetic polystyrene particles

Application

Easily conjugated with biotin, making them useful for several detection assays,.

Used to calibrate and test particle size analyzers. Easily conjugated with biotin, making it useful for several detection assays.

Features and Benefits

• suitable for routine instrument calibration checks, testing and corrections
• available in 5 mL and 10 mL pack sizes as a neat sample

Analysis Note

Binding capacity for FITC-Biotin: >1500 pmol/mg

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves