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Imprint® Ultra Chromatin Optimization Kit

Kit designed to optimize sonication parameters for ChIP experiments


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General description

The Imprint Ultra Chromatin Optimization Kit provides reagents needed to optimize chromatin sonication/shearing conditions before performing ChIP. It is imperative that chromatin is completely sheared into fragments with a peak around 500 base pairs (bp) for ChIP-qPCR assays, and < 500 bp for ChIP-Seq and ChIP-chip, for maximum specificity and resolution, and to ensure low background. For higher resolution applications like genome-wide location analysis by ChIP-chip or ChIP-Seq, sonication of input chromatin to below 500 bp, with a peak around 250 bp, is critical.


Sufficient reagents are provided to perform three sets of chromatin sonication optimization experiments. Each set would include five different conditions for sonication to optimize the parameters. Reagents are provided for a total of 15 reactions, including preparation of cell lysates from 107 cells/reaction, nuclei lysis, sonication, cross-link reversal and DNA purification.

Legal Information

Imprint is a registered trademark of Sigma-Aldrich Co. LLC

Kit Components Also Available Separately

Product No.

  • I8896IGEPAL® CA-630, for molecular biology

  • S5150Sodium chloride solution, 5 M in H2O, BioReagent, for molecular biology, suitable for cell culture

  • W4502Water, Nuclease-Free Water, for Molecular Biology

  • A84564-(2-Aminoethyl)benzenesulfonyl fluoride hydrochloride, ≥97.0% (HPLC)

  • P8340Protease Inhibitor Cocktail, for use with mammalian cell and tissue extracts, DMSO solution

  • R4642Ribonuclease A from bovine pancreas, (Solution of 50% glycerol, 10mM Tris-HCL pH 8.0)

Signal Word


Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Flam. Liq. 3 - Met. Corr. 1 - Ox. Liq. 1 - Skin Corr. 1B - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

5.1A - Strongly oxidizing hazardous materials



Flash Point(F)

100.4 °F

Flash Point(C)

38 °C

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XIV (Authorisation List)

Certificate of Analysis

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Certificate of Origin

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