Buffers

<h2>What are ChIP buffers?</h2>
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ChIP buffers are the aqueous formulations used at each stage of a chromatin immunoprecipitation protocol: cell lysis buffer disrupts the plasma membrane and releases nuclear content, nuclear lysis buffer solubilizes chromatin under conditions compatible with subsequent immunoprecipitation, sonication buffer maintains chromatin stability during shearing, ChIP dilution buffer reduces SDS concentration from the lysis buffer to allow antibody-antigen binding, sequential wash buffers with increasing ionic strength and detergent remove non-specifically bound chromatin while preserving the specific antibody-antigen-DNA complex, and elution buffer releases the captured complex from the antibody-bead resin before de-crosslinking.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
<li dir="ltr" role="presentation">MN Digestion Buffer used in MNase-based workflows for enzymatic fragmentation of&nbsp; chromatin&nbsp;</li>
<li dir="ltr" role="presentation">Chromatin Shearing Buffer using sonification for chromatin disruption and preparation</li>
<li dir="ltr" role="presentation">5X MN Stop Buffer for the termination of enzymatic digestion reactions</li>
<li dir="ltr" role="presentation">Chromatin Dilution Buffer used in ChIP assays to provide optimized conditions for antibody binding&nbsp;</li>
<li dir="ltr" role="presentation">Chromatin Wash Buffer I, II, and III for background reduction and step-by-step non-specific binding removal&nbsp;</li>
<li dir="ltr" role="presentation">ChIP DNA Binding Buffer for purification and capture of immunoprecipitated DNA</li>
<li dir="ltr" role="presentation">5X Chromatin Elution Buffer for protein&ndash;DNA complexes recovery</li>
<li dir="ltr" role="presentation">5M NaCl for enhancing elution and chromatin stabilization</li>
<li dir="ltr" role="presentation">Nuclei Prep Buffer used before chromatin extraction for superior nuclear isolation</li>
</ul>
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<h2>How to use ChIP buffers</h2>
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Always add protease inhibitors to lysis and wash buffers immediately before use
Protease inhibitors must be added fresh to cell lysis and nuclear lysis buffers immediately before use, since most inhibitors are unstable in aqueous solution and lose activity quickly, and without them, nuclear proteases released during lysis will degrade histone tails and reduce ChIP enrichment of histone modifications.
Confirm SDS concentration is diluted before immunoprecipitation
High SDS in the nuclear lysis buffer is necessary for chromatin solubilization and sonication, but must be diluted approximately 10-fold using ChIP dilution buffer before antibody addition, since high SDS disrupts antibody-antigen binding and reduces immunoprecipitation efficiency.
Keep all buffers and chromatin on ice throughout the workflow after lysis
Chromatin prepared for ChIP is sensitive to non-specific interactions and protease activity after cell lysis, and maintaining samples at 4&deg;C throughout all lysis, sonication, immunoprecipitation, and wash steps minimizes these effects and preserves specificity of the enrichment.
Optimize wash buffer stringency to balance specificity against yield
ChIP wash buffers are applied sequentially at increasing ionic strength and detergent concentration to remove non-specifically bound chromatin; conditions too stringent can also strip the specific antibody-antigen-DNA complex from the beads, reducing yield, so optimization of wash conditions for each antibody-target combination improves performance.
Confirm elution buffer composition fits your downstream application
Standard ChIP elution buffers containing SDS and sodium bicarbonate release the protein-DNA complex and reverse crosslinks, but high SDS in the eluate can inhibit some NGS library preparation enzymes, making a DNA cleanup step after elution important before proceeding to library prep.
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<h2>Specifications context</h2>
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Protease inhibitor cocktails, added fresh to lysis buffers immediately before ChIP, are a standard component across kit formats and in-house protocols, since even brief protease activity can compromise histone modification detection by degrading the histone tails that ChIP antibodies recognize. As of 2026, ChIP buffer formulations compatible with low-input chromatin and NGS library preparation continue to be optimized for primary cell and tissue ChIP workflows.
<a href="https://mbpinc.net/contact-us">Contact the expert team </a>at MBP and request a quote today to get high-quality ChIP buffers for your lab.

MSDS

5M NaCl (1 ml)

D5210-7-1 by Zymo Research is 5&nbsp;M NaCl solution, 1&nbsp;ml, a component of the Zymo-Spin ChIP Kit (D5210). Used in high-salt wash steps during chromatin immunoprecipitation (ChIP) protocols. Available separately for component replenishment.

Manufacturer

Shipping Condition

Storage Condition

5X Chromatin Elution Buffer (10 ml)

D5210-6-10 by Zymo Research is a 5× concentrated Chromatin Elution Buffer (10 mL) used for sample processing in chromatin immunoprecipitation (ChIP) assays performed with the Zymo-Spin ChIP Kit.

5X MN Stop Buffer (6 ml)

D5220-4 by Zymo Research is the 5X MN Stop Buffer (6 ml), used with the EZ Nucleosomal DNA Prep Kit to terminate micrococcal nuclease digestion and preserve nucleosomal DNA fragment length for ChIP-seq, ATAC-seq, and related chromatin analysis workflows. Ordered as a standalone replacement when this buffer component is depleted.

ChIP DNA Binding Buffer

D5201-1-100 ChIP DNA Binding Buffer by Zymo Research — 100 ml; 5:1 ratio to ChIP sample; tolerates 1% SDS, 5% Triton X-100/Tween-20/Sarkosyl; Zymo-Spin I and IC column compatible; room-temp storage.

ChIP DNA Binding Buffer (100 ml)

ChIP DNA Binding Buffer (50 ml)

Chromatin Dilution Buffer (30 ml)

D5210-2-30 Chromatin Dilution Buffer by Zymo Research — 30 ml, room-temperature storage — dilutes ChIP-grade antibody during chromatin immunoprecipitation. Compatible with Zymo-Spin ChIP Kit (D5209, D5210).

Chromatin Shearing Buffer (30 ml)

D5210-1-30 by Zymo Research is a 30 ml chromatin shearing buffer for nuclei preparation and sonication in ChIP workflows, supporting reproducible fragment sizing to 100–600 bp. Sold as a standalone refill for the Zymo-Spin ChIP Kit (D5210).

Chromatin Wash Buffer I (30 ml)

D5210-3-30 by Zymo Research is Chromatin Wash Buffer I, 30 mL. Used as the first wash of Protein A bead/antibody/chromatin complexes in ChIP workflows. Compatible with the Zymo-Spin ChIP Kit (D5209, D5210). Sold separately. Store at room temperature.

Chromatin Wash Buffer II (30 ml)

D5210-4-30 by Zymo Research is Chromatin Wash Buffer II, a 30 ml buffer for the second chromatin wash step in the Zymo-Spin ChIP Kit (D5209, D5210) workflow. Stored at room temperature; available individually for kit buffer replenishment.

MN Digestion Buffer (50 ml)

MN Digestion Buffer (D5220-3) by Zymo Research — 50 ml buffer optimized for micrococcal nuclease (MNase) digestion of single- and double-stranded DNA and RNA. Used in nucleosomal DNA preparation; compatible with EZ Nucleosomal DNA Prep Kit (D5220). Room temperature storage. Made in the USA.

Nuclei Prep Buffer

D5220-2 by Zymo Research is Nuclei Prep Buffer for chromatin immunoprecipitation (ChIP). Used at 500 µl (with protease inhibitors) to resuspend cross-linked cell pellets before chromatin shearing. Compatible with Zymo-Spin ChIP Kit (D5209, D5210). Store at room temperature. Available in 30 mL and 50 mL.

Nuclei Prep Buffer (50 ml)

Nuclei Prep Buffer (30 ml)

Chromatin Wash Buffer III (30 ml)

Chromatin Wash Buffer III (D5210-5-30) by Zymo Research is a 30 ml wash reagent for the third sequential wash step in Zymo-Spin ChIP Kit (D5209, D5210) protocols, removing residual non-specific binding from Protein A bead/antibody/chromatin complexes before DNA elution. Sold separately for kit replenishment or standalone use; store at room temperature. MBP is a registered vendor for Howard Hughes Medical Institute, Vanderbilt University, MD Anderson Cancer Center, Eurofins, and many other institutes across the USA.