Cytiva Vivaspin™ 2 Sample Concentrators

Use for one-step, non-denaturing sample concentration in a single tube for minimal sample handling and reduced sample loss. Cytiva Life Vivaspin™ 2 Sample Concentrators cater to scientists working with sample volumes ranging from 100 μl to 20 ml, with a range of MWCO values from Mr 3 000 to 100 000.

Catalog Number	Mfr. No.	MWCO
45-001-568	Cytiva 28932248	30 kDa
45-001-566	Cytiva 28932245	5 kDa
45-001-569	Cytiva 28932257	50 kDa
45-001-567	Cytiva 28932247	10 kDa
45-001-565	Cytiva 28932240	3 kDa
45-001-570	Cytiva 28932258	100 kDa

Description

Up to 30-fold concentration of the sample can be achieved with recovery of the target molecule typically exceeding 95%. Patented dead-stop technology ensures that samples cannot be concentrated to dryness and enables direct concentrate recovery.

• Accept sample volumes from 100μLto 20mL, with a range of molecular weight cutoff values from M_r3000 to 100,000
• Vertical polyethersulfone semi-permeable membrane separating upper and lower chamber resists blockage and tolerates high flow rate
• Centrifugation forces solvent through membrane, leaving concentrated sample in the upper chamber
• Compatible pH range: 1 to 9
• Active membrane area: 1.2cm²
• Vivaspin 2 offers easy, contact-free storage by reverse spinning the concentrate into the recovery cap

For maximum recovery, select a MWCO at least 50% smaller than the molecular size of the species of interest.

Specifications

• Material (Membrane): PES
• Quantity: 25/Pk.
• Length (Metric): 126 mm

• Filtration Area: 1.2 cm²
• Volume (Metric): 400 μL to 2 mL
• Width (Metric): 17 mm