Merck

57250-U

Supelco

Visiprep SPE Vacuum Manifold, PFAS-Free

new

standard, 24-port model

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NACRES:
NB.21

物料

UHMW PE frit
polypropylene tube

质量水平

Agency

suitable for DIN 38407-42
suitable for EPA 1633
suitable for EPA 533
suitable for EPA 537.1
suitable for EPA ACB B21-02
suitable for EPA ACB B23-05b
suitable for EPA OTM-45
suitable for GB 31604.35-2016
suitable for ISO 21675 2019
suitable for ISO 25101
suitable for ISO/CEN 15968-2010

管理合规性

suitable for FDA C-010.02

产品线

Visiprep

技术

solid phase extraction (SPE): suitable

适用性

suitable for (for PFAS Testing)

应用

environmental
food and beverages

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一般描述

Visiprep Solid Phase Extraction Vacuum Manifolds andaccessories automate the preparation and cleanup of laboratory liquid samplesby solid phase extraction. Used with a vacuum pump, a Visiprep™ manifold canextract up to 12 or up to 24 samples simultaneously, significantly increasingsample throughput while decreasing sample preparation hands-on time, relativeto liquid-liquid extraction methods. Visiprep vacuum manifolds feature avacuum bleed valve and a stand-alone coverto provide you with precise flow control and safe, easy use.With our flow control valves you can precisely manipulate flow through eachtube by rotating the individual screw-valves built into the cover. Our recentlyoptimized standard manifolds are suitable for SPE methods in the PFAS testingarea. All crucial components that contain PFAS (e.g. PTFE) are substituted byPFAS free alternatives like e.g ultra-high molecular weight Polyethylene (UHMWPE) or stainless steel (needle guides). These ensure low PFAS backgroundcontamination during the SPE process. The glass basin will not dissolve, fog,or discolor when exposed to powerful solvents. The manifold rack accommodatesautosampler or small scintillation vials, 10 mm or 16 mm test tubes, or 1, 2, 5or 10 mL volumetric flasks. An optional plate fits up to ten 20 mLscintillation vials in the 12-port model. The vacuum bleed valve improves control of the vacuum level andensures more secure closure of the valve. This screw-type valve is fitted withan ultra-high molecular weight polyethylene cone shaped seal (now PTFE-free).Tightening the screw ensures a complete seal with no leakage at the valve.Loosening the screw breaks the seal, allowing immediate vacuum release to stopextractions or to lift the manifold cover. Four 2" legs enable you tostand the cover on a work surface with the SPE tubes maintaining their uprightpositions. This prevents solvent guides from resting on the work surface andbecoming damaged or contaminated. Drying attachment on themanifold is sold separately, it installs in minutes and can be used with anyinert gas. The drying attachment also is useful for concentrating recoveredsamples. Gas flow to each tube can be independently adjusted.

特点和优势

  • Patented screw-type valves within each SPE port for precise flowcontrol
  • Glass basin will not dissolve, fog, or discolor when exposed tosolvents
  • Legs on cover allow user to easily rest cover on work surface whenremoved from the manifold
  • Screw-type solvent-resistant vacuum bleed gauge and valve offerbetter sealing and vacuum control. Valve takes 1/4″ vacuumtubing.
  • PP collection vessel rack accommodates autosampler vials; smallscintillation vials (22.75 mm O.D. recommended); 10 and 16 mm test tubes; and 1, 2, 5, and 10 mL volumetric flasks. An optional plate for 20 mL scintillationvials is available for 12-port models.

法律信息

Visiprep is a trademark of Sigma-Aldrich Co. LLC

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Cheng Zhang et al.
Cell, 175(1), 212-223 (2018-09-23)
CRISPR-Cas endonucleases directed against foreign nucleic acids mediate prokaryotic adaptive immunity and have been tailored for broad genetic engineering applications. Type VI-D CRISPR systems contain the smallest known family of single effector Cas enzymes, and their signature Cas13d ribonuclease employs

实验方案

Optimize β-glucuronidase hydrolysis for glucuronide metabolite analysis considering factors like time, temperature, pH, and enzyme concentration.

为了使用β-葡糖醛酸酶优化水解,必须对每种待分析的葡糖苷酸代谢物进行某些因素的评估,例如孵育时间、温度、水解pH、酶源和酶浓度。

相关内容

FAS, or 'forever chemicals,' persist in the environment and pose risks to human health. Discover our environmental monitoring tools for PFAS quantification, aiding researchers, regulators, and labs in testing for PFAS.

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