NY-COS

Chitosan Oligosaccharide (Agricultural Grade – NY-COS)

Low-Molecular-Weight, Water-Soluble Chitosan Oligosaccharide for Agricultural Formulations

NY-COS is an agricultural-grade chitosan oligosaccharide (<1500 Da, batch-documented at 1229 Da) produced from chitin by enzymatic hydrolysis. A fully water-soluble, high-clarity COS biostimulant designed for precision agriculture hydroponics, foliar spray, drip irrigation, and seed treatment.

  • Ultra-low molecular weight (<1500 Da) for rapid plant uptake and bioavailability
  • High-clarity solutions — batch turbidity 141.4 (spec ≤270), no residue or clogging
  • ≥90% content; compatible with NPK, micronutrients, and fertigation systems
Synonyms: NY-COS, Chitosan Oligosaccharide, Chitosan Oligosaccharide Powder, Agricultural Grade Chitosan Oligosaccharide, Agricultural COS, Low-Molecular-Weight Chitosan Oligosaccharide, Water-Soluble Chitosan Oligosaccharide, Chitooligosaccharide, COS Biostimulant, Plant-Grade Chitosan Oligosaccharide, Precision-Agriculture COS
Product identity
Chitosan oligosaccharide
Grade/type
NY-Agriculture
Appearance
Light yellow powder
Odor
Odorless
Content/purity
≥90%

Properties

PropertyValueTest methodNote
Product identityChitosan oligosaccharideSupplier identification methodBatch-specific COA
Grade/typeNY-AgricultureSupplier classificationAgricultural grade
AppearanceLight yellow powderVisual inspectionCOA result: Pass
OdorOdorlessOrganoleptic inspectionCOA result: Pass
Content/purity≥90%Supplier analytical methodBatch result: 95.25%
Average molecular weight<1500 DaSupplier molecular-weight methodBatch result: 1229 Da
Convertible glucosamine≥60%Supplier analytical methodBatch result: 79.91%
Monosaccharide≤2.0%Supplier analytical methodBatch result: 0.1%
Degree of deacetylation≥85%Supplier DAC methodBatch result: 90%
Moisture≤10.0%Supplier moisture testBatch result: 6.20%
Particle size100 meshSieve analysisBatch result: 100 mesh
Ash content≤2.0%Supplier ash testBatch result: 0.52%
Insoluble matter≤0.5%Supplier insoluble-matter testBatch result: 0.08%
pH4.5–7.01% aqueous solutionBatch result: 5.21
Turbidity≤270Supplier turbidity methodBatch result: 141.4
Solution absorbanceSupplier reference procedure1.5 g COS in 50 mL water, tested at 486 nmBatch result: 0.317
Lead (Pb)≤1 mg/kgSupplier heavy-metal testNot detected
Arsenic (As)≤1 mg/kgSupplier heavy-metal testNot detected
Mercury (Hg)≤1 mg/kgSupplier heavy-metal testNot detected
Batch numberNY2025091204Batch traceability recordCurrent COA batch
Production dateSeptember 12, 2025Supplier COABatch-specific
Expiration dateSeptember 11, 2027Supplier COASubject to recommended storage
Quality conclusionQualifiedSupplier quality reviewBatch approved

Packaging & Quality

ItemDetail
Standard pack sizeStandard commercial pack: 1 kg
Bulk availabilityBulk quantities are available through a custom quotation.
Production-lot quantityThe documented manufacturing-lot quantity is 2600 kg. This is not the retail pack size.
PackagingSupplied in sealed, moisture-resistant packaging suitable for powdered agricultural ingredients.
Certificate of AnalysisBatch-specific COA available for NY-COS batch NY2025091204.
Quality statusThe documented batch was inspected and classified as qualified.
Heavy-metal controlLead, arsenic, and mercury were not detected under the supplier’s test procedures.
TraceabilityProduction date: September 12, 2025; expiration date: September 11, 2027.
ManufacturerQingdao Yuda Century Economy and Trade Co., Ltd., Qingdao, China
Source verificationBiological source and allergen status require separate supplier documentation.

Tiered Pricing

QuantityPrice / quotePackagingShipping
25 g sample$40 TotalSample packFree shipping
1 kg$62.50/kg1 kg packEstimated USA total: $62.50 + 15% import tariff + $60 FedEx shipping
Bulk quantitiesRequest QuoteBulk packaging by quantityProduct and shipping quoted separately by quantity and destination

Product Overview

Chitosan Oligosaccharide Agricultural Grade Supplier (NY-COS) | Low Molecular Weight Biostimulant for Hydroponics, Foliar Spray & High-Value Crops

High-Clarity, Low Molecular Weight COS for Precision Agriculture, Hydroponics & Advanced Crop Systems

Modern agriculture is rapidly transitioning toward precision-input systems where solubility, absorption speed, and consistency directly impact crop performance.

Standard chitosan products often fail in these systems due to:

  • incomplete solubility in hydroponic solutions
  • inconsistent molecular weight distribution
  • residue formation in foliar and drip systems
  • limited absorption efficiency

NY-COS (Chitosan Oligosaccharide – Agricultural Grade) is engineered to solve these limitations. It is a low molecular weight chitosan oligosaccharide (<1500 Da) with high solution clarity, designed for rapid plant uptake, superior bioavailability, clean integration in hydroponic and foliar systems, and consistent performance in high-value crops.

If you are looking to buy chitosan oligosaccharide for plants, source a low molecular weight COS supplier, or develop precision agriculture formulations, NY-COS is optimized for commercial use.

What is NY-COS (Chitosan Oligosaccharide)?

NY-COS is an enzymatically hydrolyzed chitosan oligosaccharide derived from chitin through controlled depolymerization a fully water-soluble, low molecular weight bioactive oligosaccharide of sea source, supplied as an odorless, light-yellow free-flowing powder.

Unlike conventional chitosan, NY-COS functions as a plant signaling molecule, influencing plant immune response, hormonal pathways (auxin regulation), and nutrient transport systems.

For integrated crop systems, combine it with chitosan for agriculture and plant protection systems to enhance both growth and plant defense.

Why Precision Agriculture is Driving Demand for Low Molecular Weight COS

The rapid expansion of hydroponic farming systems, greenhouse agriculture, high-value crop production, and controlled environment agriculture (CEA) has created demand for high-purity, fully soluble biostimulants. NY-COS meets these requirements by offering:

  • no precipitation or clogging in irrigation systems
  • rapid absorption in foliar applications
  • consistent performance across controlled environments

This positions it as a preferred plant biostimulant raw material for advanced agricultural inputs.

NY-COS vs. Standard Chitosan Oligosaccharide

Parameter Standard COS NY-COS
Molecular Weight Moderate Ultra-low (<1500 Da)
Absorption Speed Moderate Rapid uptake
Solution Clarity Low / cloudy High clarity batch turbidity 141.4 (spec ≤270, lower is clearer)
Solubility Partial Fully water-soluble
Application General agriculture Hydroponics, foliar, precision systems
Bioavailability Limited High efficiency

NY-COS is specifically engineered for high-performance agricultural systems where purity and absorption matter.

Mechanism of Action in Plant Systems

1. Plant Immune Activation

Activates plant defense signaling pathways, improving resistance to pathogens and environmental stress.

2. Hormonal Regulation

Enhances auxin signaling, resulting in improved root elongation, balanced shoot development, and uniform plant growth.

3. Enhanced Nutrient Uptake

Improves transport and assimilation of nutrients, especially in hydroponic and foliar systems.

4. Photosynthesis & Metabolic Activation

Supports chlorophyll synthesis and enzymatic activity, leading to increased biomass production and improved growth efficiency.

5. Stress Resistance

Enhances tolerance to drought, salinity, and temperature fluctuations.

Formulation Compatibility

NY-COS is designed for seamless integration: compatible with hydroponic nutrient solutions; no precipitation or clogging in drip irrigation systems; stable in foliar spray formulations; compatible with micronutrients and NPK fertilizer systems; and suitable for tank-mix applications (validation recommended). This makes it ideal for fertilizer manufacturers and biostimulant formulation companies.

Applications in Modern Agriculture

  • Hydroponic systems — clean solution compatibility, rapid nutrient uptake, improved plant response
  • Foliar spray applications — fast leaf absorption, enhanced metabolic activation, improved crop uniformity
  • Greenhouse & controlled agriculture — consistent performance for high-value crops in controlled environments
  • Soil & fertigation systems — improved root development and enhanced nutrient efficiency
  • Seed treatment — improved germination rate and stronger early plant vigor

Target Crop Segments

  • Fruits (berries, citrus, orchard crops) — improved sugar accumulation and quality
  • Vegetables (tomatoes, cucumbers, leafy greens) — enhanced growth consistency and yield
  • High-value crops (greenhouse and hydroponic production, export-quality produce)

Performance Benefits at a Glance

  • faster plant absorption and utilization
  • improved root biomass and nutrient uptake efficiency
  • enhanced crop yield and quality
  • increased chlorophyll activity and metabolic performance
  • improved stress resistance under environmental pressure
  • reduced dependency on chemical inputs

NY-COS is widely used as a COS biostimulant for hydroponics and a chitosan-based plant growth enhancer in hydroponic nutrient formulations, foliar spray biostimulants, seed coating systems, and premium agricultural biostimulant blends.

Bulk Supply for Agricultural Buyers

We are a chitosan oligosaccharide supplier for agricultural applications, supporting global markets with scalable bulk production, consistent quality control, global shipping support, and technical formulation assistance. For buyers searching chitosan oligosaccharide price per kg, bulk COS supplier for agriculture, or a low molecular weight chitosan supplier, we provide customized supply solutions.

Why Choose NY-COS?

  • ultra-low molecular weight for rapid uptake
  • high clarity for hydroponic and foliar systems
  • no residue or clogging issues
  • superior bioavailability vs. standard COS
  • consistent industrial-grade quality

Designed for precision agriculture, not generic input use. To build a complete crop-input ecosystem, also review chitosan for plant defense and crop protection systems pairing a growth biostimulant with a defense-focused chitosan creates multi-functional crop programs.

Request Bulk Pricing & Technical Support

If you are sourcing a high-performance chitosan oligosaccharide for agriculture, we can support your formulation, production, and supply needs. Contact our team at steve@chitosanglobal.com and upgrade to low molecular weight chitosan oligosaccharide designed for precision agriculture.

Applications

Foliar Formulations

Water-soluble, low-molecular-weight COS for evaluation in foliar biostimulant formulations intended to support plant response and nutrient utilization.

Learn more

Hydroponic Systems

May be evaluated in hydroponic nutrient systems where water compatibility, low molecular weight, and controlled insoluble matter are important.

Learn more

Fertigation and Drip Irrigation

Suitable for experimental fertigation and drip-irrigation formulations, subject to filtration, precipitation, and compatibility testing.

Learn more

Seed Treatment

May be evaluated in seed-treatment and coating formulations designed to support germination and early plant establishment.

Learn more

Root-Zone Formulation

Suitable for experimental soil and root-zone applications targeting root development and nutrient-use efficiency.

Learn more

Plant-Defense Research

May be evaluated as a chitosan-based elicitor in plant-defense and crop-response research. Crop-specific validation is required.

Learn more

Controlled-Environment Agriculture

Intended for evaluation in greenhouse, hydroponic, and other controlled-environment crop systems.

Learn more

Directions for Use

Add the required quantity gradually to clean water while stirring until evenly dispersed or dissolved. Begin with a small laboratory or greenhouse trial. Determine the final concentration according to crop, growth stage, application method, water quality, and environmental conditions. Before combining with fertilizers, micronutrients, pesticides, or other agricultural inputs, conduct tank-mix, precipitation, filtration, stability, and phytotoxicity testing.

Storage and Handling

Store in the original tightly sealed container in a cool, dry, and well-ventilated location. Protect from moisture, direct sunlight, excessive heat, and contamination. Use clean, dry equipment when dispensing. Keep the package sealed when not in use. Follow the storage conditions stated in the current Safety Data Sheet and batch-specific Certificate of Analysis.

Safety Information

Signal Word
Refer to the current product-specific Safety Data Sheet.
Hazard Classification
No verified GHS hazard classification is stated in the supplied Certificate of Analysis. Consult the current NY-COS Safety Data Sheet before handling.
Hazard Codes
Refer to the current product-specific SDS for applicable hazard statements and codes.
Precautionary Statements
Avoid generating or inhaling airborne powder. Avoid contact with eyes and prolonged contact with skin. Wear suitable protective gloves and safety glasses during handling. Use appropriate respiratory protection when dust may be generated. Wash hands thoroughly after handling. Consult the current product-specific Safety Data Sheet before use.
Storage Class
Dry powdered agricultural ingredient; confirm the official storage class from the current product-specific SDS.

Documentation

PDF

Material Safety Data Sheet / Safety Data Sheet

Document pending. Please contact us if you need this document before ordering.

Protocols and Articles

Chitosan in Agriculture

Educational overview of chitosan-based materials in crop-input and agricultural formulations.

Frequently Asked Questions

What is NY-COS?

NY-COS is an agricultural-grade chitosan oligosaccharide powder with a documented average molecular weight below 1500 Da and a batch purity of 95.25%.

What is its molecular weight?

The specification is below 1500 Da. The documented batch result is 1229 Da.

What is the product purity?

The minimum content specification is 90%. The documented batch result is 95.25%.

Is NY-COS water-soluble?

The product is described as water-soluble. The documented batch contains only 0.08% insoluble matter against a maximum specification of 0.5%.

What is the degree of deacetylation?

The minimum specification is 85%. The documented batch result is 90%.

What is the pH?

The specified pH range is 4.5–7.0 for a 1% aqueous solution. The documented batch result is 5.21.

Can NY-COS be evaluated in hydroponic systems?

Yes. Its low molecular weight and low insoluble-matter result support evaluation in hydroponic formulations, subject to compatibility and filtration testing.

Can it be applied as a foliar spray?

It may be evaluated in foliar formulations. The appropriate concentration should be established through crop-specific compatibility and phytotoxicity trials.

Can it be mixed with fertilizers or pesticides?

Compatibility must be confirmed through small-scale tank-mix, precipitation, stability, filtration, and phytotoxicity testing.

Were heavy metals detected?

Lead, arsenic, and mercury were not detected in the documented batch under the supplier’s analytical procedures.

Is NY-COS mushroom-derived and shellfish-free?

The supplied COA does not identify the biological source. Mushroom-derived, sea-source, vegan, and shellfish-free claims require separate supplier documentation.