Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of large particle colloidal silica in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable large particle colloidal silica for sale here from our factory.
Large Particle Colloidal Silica Grade Comparison
| Model | Particle Size | SiO₂ Content | Na₂O Content | pH | Shelf Life |
|---|---|---|---|---|---|
| LS30 | 30–40 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS50 | 50–60 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS80 | 80–90 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS100 | 100–110 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS120 | 110–120 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS150 | 140–160 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
| LS180 | 170–190 nm | 30–50% | ≤0.4% | 9.5–10.5 | ≥12 months |
The pH can be customized within 3–11. Confirm the target pH, silica concentration and final acceptance limits before sampling or ordering.
Select the Required Particle-Size Range
LS30 and LS50
Standard options for buyers specifying particle sizes of 30–40 nm or 50–60 nm.
LS80, LS100 and LS120
Intermediate large-particle grades covering 80–90 nm, 100–110 nm and 110–120 nm.
LS150 and LS180
The largest published size ranges, available at 140–160 nm and 170–190 nm.
pH 3–11
The pH can be reviewed within the published customizable range after the target value and tolerance are provided.
Information Needed for Grade Recommendation
Seven LS grades provide defined particle-size intervals. Confirm the required size, silica concentration and pH before selecting a standard or customized specification.
- Particle size: select the required LS grade and published particle-size interval.
- Silica content: provide the target value within the published 30–50% range.
- pH: confirm the standard 9.5–10.5 range or specify a customized value within 3–11.
- Sodium limit: confirm that Na₂O ≤0.4% meets the purchasing specification.
- Quality requirements: provide the test method, certificate requirements and acceptance limits.
- Order details: include trial quantity, annual demand, packaging and destination country.
Request an LS Grade Sample and Quote
Send the target particle size, SiO₂ content, pH, sodium limit, trial quantity, annual demand, preferred packaging and destination country.
Request a Grade RecommendationProtect Product Stability During Storage
Packaging Options
Available polyethylene packaging sizes are 25 kg, 250 kg and 1000 kg.
Storage Temperature
Store at 0–40°C and protect from freezing. Temperatures below 0°C can cause irreversible gelation.
Direct Sunlight
Avoid prolonged exposure to direct sunlight during storage and transportation.
Container Closure
Keep containers closed to limit water evaporation and precipitation of solid silica particles.
Large Particle Colloidal Silica Purchasing Questions
Which large particle colloidal silica grades are available?
The standard grades are LS30, LS50, LS80, LS100, LS120, LS150 and LS180.
What particle-size range is available?
The published grade ranges start at 30–40 nm and extend to 170–190 nm.
Can the pH be customized?
Yes. The pH is listed as customizable within 3–11, subject to final specification confirmation.
What packaging sizes are available?
The listed polyethylene packaging options are 25 kg, 250 kg and 1000 kg.
How should large particle colloidal silica be stored?
Store it at 0–40°C, prevent freezing and direct sunlight, and keep the container closed.
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Applications of Large Particle Colloidal Silica
Large particle colloidal silica is primarily selected for polishing-liquid formulations and compatible specialty coatings. Choose the grade by particle-size range and confirm performance under actual processing conditions.
Semiconductor Wafer Polishing
Evaluated in compatible polishing-slurry systems requiring controlled large silica particles.
Metal Surface Polishing
Used in polishing formulations where particle size and silica concentration influence the required surface finish.
Ceramic Surface Polishing
Suitable for trials on compatible ceramic surfaces using a selected LS particle-size range.
Optical Material Polishing
Can be evaluated in precision surface-finishing formulations after particle size and pH are confirmed.
Specialty Coatings
Used as a functional silica component in coating systems compatible with the selected pH and particle size.
Custom Polishing Slurries
Supports slurry-development projects requiring a defined LS grade and a customized pH within 3–11.
