Product Class: Kit

Monarch® RNA Cleanup Kit (50 μg)

Product Introduction

The Monarch RNA Cleanup Kit (50 µg) enables fast and simple purification and concentration of up to 50 µg of RNA from enzymatic reactions.

  • Ideal for cleanup and concentration of RNA after enzymatic treatments including DNase I, Proteinase K, labeling, capping or in vitro transcription (IVT)
  • Efficiently purify RNA ≥ 25 nt (a simple modification enables purification of RNA ≥ 15 nt)
  • Elute in ≥ 20 µl for concentrated RNA
  • 70-100% RNA recovery
  • Can be used to purify RNA from the aqueous phase following TRIzol® or similar extractions
  • Simplified workflow with a single wash buffer
  • Unique column design prevents buffer carryover and elution of silica particulates
  • Columns and buffers are available separately
  • Purified RNA is ready for use in a wide variety of downstream applications, including transfection

Learn more about Monarch DNA and RNA purification products


Bioz Badge Exists : True
Catalog # Size Concentration
T2040S 10 preps 0 %
T2040L 100 preps 0 %

Product Information


The Monarch RNA Cleanup Kit (50 µg) rapidly and reliably purifies up to 50 μg of concentrated, high-quality RNA (> 25 nt) from enzymatic reactions including labeling, capping, in vitro transcription (IVT) and DNase I treatment. This kit utilizes a bind/wash/elute workflow with minimal incubation and spin times. Our unique column design ensures zero buffer retention and no carryover of contaminants, enabling elution of sample in volumes as low as 20 μl. Unwanted NTPs and short RNA fragments are removed, ensuring highly pure RNA transcripts following IVT/RNA synthesis. Eluted RNA is ready for use in a variety of downstream applications, including RT-PCR, RNA library prep for NGS and RNA labeling. The protocol can also be modified to enable the purification of smaller RNA fragments (≥ 15 nts).

Designed with sustainability in mind, Monarch kits use significantly less plastic and responsibly-sourced, recyclable packaging.

Monarch RNA Cleanup kits are also available for 10 µg (NEB #T2030) and 500 µg (NEB #T2050) binding capacities. Columns and buffers are also available separately for convenience.


Figure 1: Monarch RNA Cleanup Kit workflow


Specifications and Applications::

RNA Sample Type Cleanup of previously purified RNA (TRIzol, phenol/ chloroform) and RNA from enzymatic reactions (in vitro transcription reactions, DNase I treatment)
Binding Capacity 50 µg
RNA Size Range ≥ 25 nt ( ≥ 15 nt with modified protocol)
Typical Recovery 70–100%
Elution Volume 20–50 µl
Purity A260/280 > 1.8 and A260/230 > 1.8
Protocol Time 5 minutes of spin and incubation time
Compatible Downstream Applications RT =-PCR, RNA library prep for NGS, Formation of ribonucleoprotein (RNP) complexes for genome editing studies, microinjection, RNA labeling, transfection

RNA Cleanup and Concentration (including from the TRIzol aqueous phase) RNA purified by other methods can be further purified
Enzymatic Reaction Cleanup Enzymes such as RNA polymerases, DNase I, Proteinase K and phosphatases are removed allowing efficient desalting
In vitro Transcription Cleanup Enzymes and excess NTPs are removed to yield highly pure synthesized RNA
RNA Gel Extraction Purification of RNA from agarose gels
RNA Fractionation Fractionation of RNA into small and large RNA pools


Figure 2: The Monarch RNA Cleanup Kit enables efficient recovery of RNA in as little as 20 µl

rRNA (50 µg of 16S and 23S Ribosomal Standard from E. coli, Sigma) was purified using the Monarch RNA Cleanup Kit (50 µg, NEB #2040) and eluted with nuclease-free water using the elution volumes indicated. The percent recovery of RNA was calculated from the resulting A260, as measured using a Trinean DropSense™ 16. Approximately 80% of RNA can be efficiently recovered in as little as 20 µl.
Figure 3: The Monarch RNA Cleanup Kit (50 µg) produces sgRNA yields consistent with other competitor RNA cleanup kits and with lower residual NTP contamination

Six different sgRNA synthesis reactions from the EnGen® sgRNA Synthesis Kit, S. pyogenes (NEB #E3322) were cleaned up using either the Monarch RNA Cleanup Kit (50 µg, NEB #T2040) or a competitor kit (according to manufacturer’s recommendations) and eluted with 50 µl of nuclease-free water. sgRNA yield was calculated from the resulting A260, as measured using a Trinean Dropsense™ 16. The Monarch Cleanup Kit produced sgRNA yields consistent with other commercially available RNA cleanup kits.

Following cleanup, residual nucleotides (NTPs) were measured by LC-MS and are reported as (percent area NTPs (rATP+rCTP+rGTP+rUTP)/percent area sgRNA). The Monarch RNA Cleanup Kit consistently outperforms other commercially available RNA cleanup kits in the removal of residual NTPs from sgRNA synthesis reactions.  

Kit Components

The following reagents are supplied with this product:

Store at (°C) Concentration
Nuclease-free Water 25
Monarch® Collection Tubes II 25
Monarch® RNA Cleanup Binding Buffer
Monarch® RNA Cleanup Wash Buffer
Monarch® RNA Cleanup Columns (50 μg)
Product Categories:
RNA Cleanup Products,
RNA Reagents Products,
RNA Extraction & Purification Products
Nucleic Acid Purification Products
RNA Analysis,
RNA Purification and Isolation

Properties & Usage

Protocols, Manuals & Usage


  1. Purification of RNA from the Aqueous Phase Following TRIzol®/Chloroform Extraction using the Monarch® RNA Cleanup Kits
  2. Separation of Large and Small RNA into Fractions using the Monarch® RNA Cleanup Kits
  3. Extraction of RNA from Agarose Gels using the Monarch® RNA Cleanup Kits
  4. Monarch® RNA Cleanup Kit Protocol
  5. Download Quick Protocol Card


The Product Manual includes details for how to use the product, as well as details of its formulation and quality controls.

Usage & Guidelines

Application Notes

FAQs & Troubleshooting


  1. What is the composition of each buffer provided with the Monarch RNA Cleanup Kits?
  2. What is the maximum binding capacity of the Monarch RNA Cleanup Column provided with the Monarch RNA Cleanup Kit?
  3. What is the smallest volume of nuclease-free water that can be used for elution with the Monarch RNA Cleanup Columns?
  4. Can I get better recovery with the Monarch RNA Cleanup Kits if I do a second elution with my eluent from the first elution?
  5. What factors affect my (A260/A230) when using the Monarch RNA Cleanup Kits?
  6. What size RNA can be purified with the Monarch RNA Cleanup Kit?
  7. Can I use the Monarch RNA Cleanup Kit to cleanup up my DNase I-treated RNA?
  8. Do you have a protocol for separating small and large RNAs into separate fractions?
  9. Can I use the Monarch RNA Cleanup Kits to purify RNA from agarose gels?
  10. Can I use the Monarch RNA Cleanup Kits to cleanup RNA after a TRIzol®/chloroform extraction?
  11. Can I use the Monarch RNA Cleanup Kits to cleanup my in vitro transcription (IVT) reaction?
  12. Is the Monarch RNA Cleanup Kit (NEB #T2040) compatible with the EnGen sgRNA Synthesis Kit, S. pyogenes?
  13. Are the Monarch RNA Cleanup Kits compatible with Luna RT-qPCR reagents?
  14. Are the Monarch RNA Cleanup Kits compatible with NEBNext reagents for RNA library prep?
  15. How can I assess RNA integrity and purity?
  16. Are the columns in the Monarch RNA Cleanup Kits the same as those in the Monarch Total RNA Miniprep Kit (NEB #T2010)?
  17. Can I purchase Monarch® buffers and columns separately?
  18. Can I do an on-column DNase I treatment with the Monarch RNA Cleanup Columns?


Problem Cause Solution
Low RNA Yield Reagents added incorrectly Check protocol to ensure correct buffer reconstitution, order of addition of buffers and ethanol, and proper handling of column flow-through and eluents.
Insufficient mixing of reagents Ensure the ethanol is thoroughly mixed with RNA sample and RNA Cleanup Binding Buffer before applying the sample to the RNA Cleanup Column.
Incomplete elution during prep Ensure the nuclease-free water used for elution is delivered directly to the center of the column so that the matrix is completely saturated. Larger elution volumes, multiple elutions, and longer incubation times can increase yield of RNA, but will dilute the sample and may increase processing times. For typical RNA samples, the recommended elution volumes and incubation times should be sufficient.
High degree of RNA secondary structure Binding and elution of smaller RNAs (< 45 nt) can be affected by secondary structure of the RNA molecules. If poor yield of a small RNA is observed, we recommend diluting your sample with 2 volumes of ethanol instead of one volume in Step 2 of the protocol.
Purified RNA is Degraded RNase contamination In order to avoid RNase contamination during RNA cleanup, make sure to work on a clean lab bench, wear gloves and use disposable RNase-free pipet tips and microfuge tubes (not provided). Keep all kit components tightly sealed when not in use.
Improper storage of RNA Purified RNA should be used immediately in downstream applications or stored at -70°C.
Low A260/230  Ratios Residual guanidine salt carry-over   Ensure wash steps are carried out prior to eluting sample. Use care to ensure the tip of the column does not contact the flow-through. If unsure, repeat centrifugation. When reusing collection tubes, blot the rim of the tube on a Kimwipe prior to reattachment to the column to remove any residual wash buffer.
Low Performance of RNA in Downstream Steps Salt and/or ethanol carry-over Ethanol and salt remaining after the washes may inhibit downstream applications. Use care to ensure that the tip of the column does not come into contact with the flow-through. If in doubt, re-centrifuge for 1 minute to ensure traces of salt and ethanol are not carried over in the eluted RNA.
DNA contamination DNA removal may be necessary for certain applications. Incubate RNA sample with DNase I (NEB #M0303) and cleanup RNA using the Monarch RNA Cleanup Protocol.

Quality, Safety & Legal

Quality Assurance Statement

Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.


The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]

Certificate Of Analysis

The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]

Safety DataSheets

The following is a list of Safety Data Sheet (SDS) that apply to this product to help you use it safely.

Legal and Disclaimers

This product is covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB).

While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.

For more information about commercial rights, please contact NEB's Global Business Development team at [email protected].

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.