Specifications

Below are standard specifications for absorbent paper. Items marked Customizable are available upon request.

Size (mm)	Basis Weight (g/m²)	Thickness (mm)	Absorbency	Packaging
100 × 200	60	0.30-0.40	≥ 8x weight	100 sheets/pack
150 × 200	60	0.30-0.40	≥ 8x weight	100 sheets/pack
200 × 250	60	0.30-0.40	≥ 8x weight	100 sheets/pack
300 × 300	60	0.30-0.40	≥ 8x weight	100 sheets/pack

Absorbency measured under standard lab conditions (20℃, deionized water).

📌 Customization Notes:
• Custom sizes available
• Custom basis weight available (40-80 g/m²)
• Sterile-grade available (pre-sterilized packaging)
• Special absorbency requirements available upon consultation

Product Description

I. Overview

Absorbent paper is a versatile auxiliary consumable in the laboratory. Manufactured from 100% high-quality cotton pulp using hydro-entanglement and through-air drying processes, producing soft, fluffy paper with extremely high absorbency (≥ 8x its own weight), lint-free, and free of optical brighteners.

Widely used for absorbing liquids on lab benches, drying glassware surfaces, covering Petri dishes to prevent condensation, and absorption/drying in biological experiments. The biocompatibility of this product makes it suitable for cell culture, microbiology, and other applications requiring high material purity.

🔬 Core Value of Absorbent Paper:
Rapid Absorption: High-absorbency fiber structure, absorbs ≥ 8x its own weight.
Contamination-free: No optical brighteners, no chemical residues — suitable for biological and chemical experiments.
No Residue: Lint-free, fiber-free — prevents sample or equipment contamination.
Versatile: Absorption, drying, covering, wiping — multiple lab auxiliary functions.

II. Core Performance Parameters

Material: 100% Cotton Pulp Fiber
Process: Hydro-entanglement + Through-air drying
Absorption Capacity: ≥ 8x own weight
Absorption Speed: ≤ 5 seconds (full saturation)
Surface: Soft, fluffy, lint-free
Optical Brighteners: None
pH: Neutral (6.5-7.5)
Biocompatibility: Passed cytotoxicity testing
Sterilization: Autoclavable (121℃, 15-20min)

≥ 8× Absorption (x own weight)

≤ 5s Full Saturation Time

6.5-7.5 pH

121℃ Autoclavable

III. Material & Workmanship

Manufactured from imported high-quality cotton pulp using hydro-entanglement to form a fluffy fiber network, then fixed through through-air drying. This process gives the paper high absorbency, softness, and low linting properties.

Contains no optical brighteners or chemical binders, and has passed biocompatibility testing to ensure no cytotoxic effects on cells or microorganisms.

Applications

Typical Applications

Lab bench cleaning

Absorbing spilled liquids and reagents

Glassware drying

Wiping moisture from beakers, graduated cylinders, test tubes

Petri dish covering

Covering Petri dish lids to prevent condensation dripping

Biological experiments

Absorption, drying, cleaning in cell culture

Instrument maintenance

Wiping condensation or spills from equipment

Sample processing

Removing excess moisture from sample surfaces

Industries

Biology Labs Cell culture, microbiology, molecular biology
Chemistry Labs General chemistry, analytical chemistry
Pharmaceutical QC labs, R&D labs
Research Institutions Multi-disciplinary labs

Selection Guide

I. By Application

Application	Recommended Size	Reason
Lab bench liquid absorption	100 × 200mm	Standard size, easy handling
Glassware drying	150 × 200mm	Larger surface area
Petri dish covering	200 × 250mm	Fits standard Petri dishes
Large area absorption/drying	300 × 300mm	Extra large size

II. By Experiment Type

General lab absorption/drying: Standard absorbent paper
Cell culture/biological experiments: Sterile-grade recommended
Trace analysis/high purity: Ultrapure water-washed (custom order)
Cleanroom environments: Cleanroom-grade (custom order)

III. Absorbent Paper vs Regular Tissue

Comparison	Absorbent Paper	Regular Tissue
Absorbency	✅ High (≥ 8x weight)	⚠️ Medium (3-4x weight)
Linting	✅ Lint-free	❌ Easy to shed fibers
Optical Brighteners	✅ None	❌ Usually contain
Biocompatibility	✅ Cytotoxicity tested	⚠️ Not tested
Sterilization	✅ Autoclavable	⚠️ Insufficient strength

💡 Selection Tip: 100 × 200mm is the most commonly used size for routine absorption and drying operations.
For cell culture and biological experiments, use sterile-grade absorbent paper for aseptic handling.
Regular tissues must not be used for biological experiments or precision instrument cleaning — optical brighteners and fiber residues may contaminate samples or damage equipment.

Operation & Maintenance

User Guide

Below are standard operating guidelines for absorbent paper. Proper use ensures optimal absorption and lab safety.

I. Pre-use Preparation

Inspect packaging integrity and paper surface for damage or contamination
For sterilization, place in sterilization bags and autoclave at 121℃ for 15-20 minutes
After sterilization, handle under aseptic conditions

II. Absorption Operation

Take 1-2 sheets (depending on liquid volume)
Directly cover the liquid surface, or wipe equipment surfaces
After absorption, discard the used paper
For large liquid volumes, use multiple layers

III. Petri Dish Covering

Take 1 sheet and cut to match the Petri dish lid inner diameter
Place the paper inside the Petri dish lid
Cover the dish — the paper absorbs condensation
Monitor and replace wet paper as needed

IV. Important Notes

Absorbent paper is single-use only — do not reuse
Do not use for precision optics (microscope lenses, optical components)
Do not use for filtration (use filter paper)
Do not use for weighing (use weighing paper)
Store in a dry, cool place to prevent moisture absorption
Dispose according to laboratory waste regulations after use

💡 From a Seasoned Lab Technician: "Absorbent paper is not lens paper" — Absorbent paper is coarse and must not be used for cleaning microscope lenses, optical devices, or precision surfaces to avoid scratches.
"Lid paper prevents dripping" — Placing absorbent paper inside Petri dish lids effectively prevents condensation from dripping onto the media surface, avoiding contamination and colony spread.
"Absorb first, then wipe" — For large liquid spills, absorb most of the liquid first, then wipe residual moisture — more efficient than wiping alone.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Chemical Safety

When absorbing corrosive liquids, wear protective gloves and safety goggles, operate in a fume hood

Biological Safety

When absorbing biological contaminants, dispose according to biological waste regulations

Waste Disposal

Dispose of used paper according to laboratory waste classification regulations

Absorbent Paper