Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of colloidal silica for optical glass polishing in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable colloidal silica for optical glass polishing for sale here from our factory.
Colloidal Silica for Optical Glass Polishing
| 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 LS grades are abrasive candidates for optical-glass polishing slurry development, not finished polishing compounds. Confirm particle distribution, oversized-particle limits and polishing performance through trials.
Match Particle Size to the Required Finish
LS30 and LS50
Finer LS options for polishing trials prioritizing surface finish and lower scratch risk under compatible slurry conditions.
LS80, LS100 and LS120
Intermediate particle ranges for balancing material-removal rate, surface roughness and defect control.
LS150 and LS180
Larger candidates for trials requiring higher removal action, subject to strict scratch and oversized-particle control.
pH 3–11
The pH can be reviewed within the published customizable range after the target value and tolerance are provided.
Information Needed for Optical Glass Polishing
Connect the abrasive specification with the glass composition, polishing stage, equipment and required surface quality.
- Optical substrate: identify glass type, composition, dimensions, initial condition and any coating.
- Polishing stage: specify stock removal, intermediate polishing, final polishing or another process step.
- Particle specification: provide nominal size, distribution, oversized-particle limit, agglomerate limit and test method.
- Slurry chemistry: state SiO₂ content, target pH, additives, dilution water and permitted sodium level.
- Performance targets: define removal rate, surface roughness, flatness, haze, scratch and defect limits.
- Order details: include equipment, pad, trial quantity, annual demand, packaging and destination country.
Request an Optical Glass Polishing Trial Grade
Send the glass type, polishing stage, target particle size, slurry chemistry, removal-rate and surface-quality requirements.
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.
Optical Glass Polishing Colloidal Silica Questions
Which colloidal silica grades can be evaluated for optical glass polishing?
The standard grades are LS30, LS50, LS80, LS100, LS120, LS150 and LS180.
What particle-size range is available for polishing trials?
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.
Which polishing results should be validated?
Validate removal rate, surface roughness, flatness, haze, scratches, pits, defect density, slurry stability and lot-to-lot consistency.
How should optical polishing 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 Colloidal Silica for Optical Glass Polishing
LS grades can be evaluated as abrasive candidates in optical-glass polishing slurries. Select the particle range by polishing stage and validate removal rate, surface quality, defects and slurry stability in the actual process.
Precision Optical Glass
Evaluated in precision polishing slurries for optical glass after particle distribution, pH and defect performance are qualified.
Optical Lens Polishing
Suitable candidates can be tested for lens surfaces requiring controlled roughness, haze and scratch performance.
Display and Cover Glass
Can be assessed in compatible display and cover-glass polishing processes with defined flatness and defect limits.
Fused Silica Components
Can be evaluated for compatible fused-silica components after removal rate and subsurface-damage requirements are defined.
Optical Glass Edge Finishing
Selected particle ranges may be evaluated in edge and shape-finishing processes under controlled slurry conditions.
Custom Optical Slurries
Supports development requiring a defined LS grade, controlled oversized particles, selected additives and a target pH within 3–11.
