“PureLig gave us the reproducibility we needed for multi-lab validation. Results matched across all sites.”
Dr. Sarah Chen
Materials Science, MIT
Research-grade Raw and Modified Lignin
Pure, reproducible, and fully characterized
Our Products
Materials engineered for your research
RAW
Kraft Lignin
The industry-standard baseline
High-purity kraft lignin isolated from softwood black liquor. Fully characterized with GPC, HPLC, and 31P-NMR for reliable benchmarking.
- Purity
- ≥ 97%
- Mw
- 5,200 Da
- Moisture
- < 5%
MODIFIED
Modified Lignin
Tailored for performance applications
Chemically functionalized lignin derivatives optimized for adhesives, coatings, and composite matrices.
- Hydroxyl content
- Tunable
- Tg range
- 90–180 °C
- Solubility
- Organic / aqueous
KIT
Research Starter Kit
Everything you need to evaluate
Curated sample set with matched COAs. Includes raw, modified, and specialty grades so you can benchmark across product lines.
- Grades
- 4 included
- Size
- 25 g each
- COA
- Included
Technical Specs
Every lot, fully characterized
Representative data from Kraft Lignin KL-2400. Full certificates of analysis accompany every shipment.
Certificate of Analysis
Lot #KL-2400-0312Kraft Lignin KL-2400
| Parameter | Result | Specification |
|---|---|---|
| Weight-Avg MW (Mw) | 5,200 Da | 4,800-5,600 Da |
| Number-Avg MW (Mn) | 2,100 Da | 1,900-2,300 Da |
| Polydispersity (PDI) | 2.48 | <= 2.8 |
| Moisture Content | 3.1% | <= 5.0% |
| Ash Content | 0.8% | <= 1.5% |
| pH (1% solution) | 6.2 | 5.5-7.0 |
Method: GPC/SEC (THF, PS standards) · Date: 2024-03-12 · Analyst: Dr. M. Lindstrom
From the Lab
What leading teams say about PureLig
“We switched after repeated supplier variability. PureLig has been consistent for more than a year.”
Prof. Marcus Lindstrom
Wood Chemistry, KTH Stockholm
“Their documentation cut weeks from our characterization cycle. Internal results aligned with the COA.”
Dr. Kenji Tanaka
Polymer Chemistry, Kyoto University
Quality
Lab-grade quality assurance
- Certificate of Analysis with every shipment
- Traceability from biomass source to final lot
- ISO 9001:2015 certified production facility
- Third-party validated analytical methods
- Stability testing at 6, 12, and 24 months
- REACH and TSCA compliance
Production Pipeline
01
Biomass Sourcing
Traceable feedstock qualification
02
Extraction
Controlled fractionation process
03
Purification
Multi-stage washing and filtration
04
Analysis
GPC, FTIR, TGA, and elemental profiling
05
QC Release
COA issue and lot approval