NEBNext® Small RNA Library Prep Set for Illumina® (Multiplex Compatible)

Note that index primers for multiplexing are not included in this kit. This means that libraries created with this kit cannot be pooled and run together. If index primers are required, kits NEB #E7300 or NEB #E7580 should be ordered instead.
Catalog #SizeConcentrationPriceQtyAdd to Cart
E7330S24 reactions$1,200.00Add to Cart
E7330L96 reactions$4,080.00Add to Cart
RNA Library Prep
Illumina® Library Preparation,
RNA for Illumina®,
RNA Library Prep for NGS


The novel NEBNext® Small RNA workflow has been optimized to minimize adaptor-dimers while producing high-yield, high-diversity libraries. The NEBNext® Small RNA Library Prep Set for Illumina® (Multiplex Compatible) enables use with your own barcode system. The kit contains adaptors but does not include multiplex primers.

Small RNA Library Preparation Workflow for Illumina
Small RNA Library Preparation Workflow for Illumina

Functional Validation
Each set of reagents is functionally validated together through construction and sequencing of an RNA library on the Illumina sequencing platform.

GenomeWeb article reviews NEBNext Small RNA Kits.

Lot Control

The lots provided are managed separately and qualified by additional functional validation. Individual reagents undergo standard enzyme activity and quality control assays, and also meet stringent criteria in the additional quality controls listed on each individual component page

Reagents Supplied

The following reagents are supplied with this product:

Store at (°C)Concentration
NEBNext 3´ Ligation Reaction Buffer-202X
NEBNext 5´ SR Adaptor for Illumina-20
NEBNext 5´ Ligation Reaction Buffer-20
Murine RNase Inhibitor
LongAmp™ Taq 2X Master Mix-202X
Gel Loading Dye, Blue256X
Quick-Load pBR322 DNA-MspI Digest-2050 μg/ml
DNA Gel Elution Buffer-201X
Linear Acrylamide-2010 mg/ml
TE Buffer-20
Nuclease-free Water-20
NEBNext Index 1 Primer for Illumina
ProtoScript II Reverse Transcriptase-20200,000 units/ml
NEBNext 3´ SR Adaptor for Illumina-20
NEBNext SR RT Primer for Illumina-20
NEBNext First Strand Synthesis Reaction Buffer-205X
NEBNext SR Primer for Illumina-20
NEBNext 5´ Ligation Enzyme Mix-20
NEBNext 3´ Ligation Enzyme Mix-20

Properties and Usage

Materials Required but not Supplied

3 M Sodium Acetate, pH 5.5
100% Ethanol
80% Ethanol
Corning®, Costar®, Spin-X® Centrifuge Tube Filters (Cellulose Acetate Filters) (Sigma Aldrich # CLS8162)

Size Selection Materials
for gel size selection:
6% Novex® TBE PAGE gel 1.0 mM
10-well (Life Technologies, Inc. #EC6265BOX)
SYBR® Gold Nucleic Acid Gel Stain (Life Technologies, Inc. #S-11494)
RNase-free Disposable Pellet Pestles® (Kimble Kontes Asset Management, Inc. #749521-1590)
Dry Ice/Methanol Bath or –80°C freezer

for bead selection:
Agencourt® AMPure® XP Beads (Beckman Coulter, Inc. #A63881)

for Pippin Prep™ selection:
3% Agarose Dye Free Gel (Sage Science #CDF 3010)

QIAquick® PCR Purification Kit (Qiagen® #28104)
Bioanalyzer® (Agilent Technologies, Inc.)

Storage Temperature



  1. Kit Optimization

    The components of this kit were collectively optimized with FirstChoice®Human Brain Reference RNA (Life Technologies, Inc. #AM6050).

    High quality total RNA should be used as starting material. An RNA IntegrityNumber (RIN) > 7 is recommended.

    Assess the quality and quantity of your sample using the Agilent 2100Bioanalyzer using an Agilent RNA 6000 Nano Chip.


  1. Can I use Total RNA to make small RNA libraries or do I have to isolate or enrich the sample for small RNA?
  2. Why does the RT primer hybridization occur before 5’adaptor ligation?
  3. Do I have to hybridize the RT primer again after 5’ ligation?
  4. How are the barcodes introduced in the Multiplex libraries?
  5. During size selection on 6% PAGE gel, which bands should I cut out of the gel?
  6. Are libraries prepared by this method compatible with paired-end flowcells for cluster generation?
  7. Can I use the small RNA sample preparation kit for Directional-RNA sequencing?
  8. What is the sequence of the final PCR product?
  9. Can I use enriched small RNA instead of total RNA for the NEBNext Small RNA Library Prep for Illumina?
  10. What should I do if my Small RNA may not have 5´ Phosphate and 3´ OH groups?
  11. How should my NEBNext Small RNA library be trimmed?


  1. NEBNext Multiplex Small RNA Sample Prep Set for Illumina - Library Preparation (E7330)
  2. QC Check and Size Selection using AMPure XP Beads (E7330)
  3. QC Check and Size Selection using 6% PolyAcrylamide Gel (E7330)
  4. Validate the Library - NEBNext Multiplex Small RNA Sample Prep Set for Illumina (For use with NEB #E7300, #E7330, and #E7580)
  5. QC Check and Size Selection Using Pippin Prep (E7330)


The Product Manual includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name these document files: manual[Catalog Number].

Interactive Tools

Application Notes


  • Huang, X. et al. (2013). Characterization of human plasma-derived exosomal RNAs by deep sequencing BMC Genomics. 14, 319. PubMedID: 23663360, DOI: doi: 10.1186/1471-2164-14-319

Safety Data Sheet

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