APS 700 Series Silt Stop®
Soil-Specific Erosion Control Powders
Applied Polymer Systems products harness the power of environmentally friendly materials to solve numerous water quality, erosion, and sediment challenges. Anionic polyacrylamide (PAM) is a polymer flocculant that can be used for a wide variety of erosion, sediment, and stormwater management applications. APS products bind, stabilize, and/or remove commonly problematic particles like sediment (clays, silt), metals, and nutrients to prevent erosion, clear water, and improve BMP performance. APS products are made and packaged in the United States, are drinking water quality (NSF/ANSI Standard 60 Certified), have been extensively toxicity tested by third party laboratories in accordance with EPA standards, and are safe for both terrestrial and aquatic organisms and environments.
Product Overview
APS 700 Series Silt Stop® delivers dry powdered or granular polyacrylamide (PAM) flocculants tailored to specific soil types. By stabilizing loose soil and preventing sediment-laden runoff, it improves erosion control and stormwater compliance on construction and disturbed sites. These soil-binding agents are NSF/ANSI 60 certified and proven safe through third-party testing for use in both terrestrial and aquatic environments.
Anionic Polyacrylamide Co-Polymers for Erosion Control
Prevents Colloidal Clays from Entering Water Bodies
Suitable for Various Applications Including Construction Sites
Primary Applications
- Soil stabilization and dust control
- Newly cleared construction and building sites
- Mine tailings and waste piles
- Road and highway construction
- Hydroseeding and water truck application
- Enhancement of existing sediment and erosion control BMPs/ water clarification.
Features and Benefits
- Holds soil, seed, and fertilizer in place during rain events
- Prevents colloidal clay suspension in stormwater
- Clarifies water and enhances erosion and sediment control best management practices
- Decreases soil movement during rain events
- Binds metals and phosphorus within soil, preventing mobilization
- Decreases pesticide and fertilizer loss
- Decreases wind borne dust (fields, haul road, etc.)
- Improves water infiltration into soil surface and aids in vegetative establishment
- Reduces operational and cleanup costs
- Helps meet regulations, environmental friendly.
Directions for Use
Dry Silt Stop®
Dry Silt Stop® is applied dry via hand spreader, push spreader, mechanical disk, or hand sowing- Slope or ditch application may require artificial support such as straw, matting, or wood fiber mulch to reduce down slope movement
- Areas of high water velocity will require benching or tier structuring to reduce velocity. Sheet flow applications are best.
- APS Silt Stop® Powder may be mixed with dry silica sand to aid in spreading. Ratios of sand to powder will vary in accordance with the type of spreading device used
Liquid (dissolved) Silt Stop®
Liquid (dissolved) Silt Stop® Powder may be applied with hydroseed, water trucks, or other spraying devices.- All spraying devices must have a mechanical agitator or mixing apparatus or hydraulic recirculation.
- Caution – Do Not mix powder into a spraying device that does not contain a mixing apparatus.
Mixing
- Sprinkle powder into the water with the mixing apparatus operating as the last material to be added to the mix. Three to Five minutes of mixing will be required after the powder is sprinkled into the water
- ADD THE POWDER SLOWLY – adding the powder to fast will result in clumping resulting in poor performance
Application Rates
- Soft Armoring application rate (per acre):
- Gentle to Moderate slopes (0 to 4H:1V)
- High Clay Content: ~20 lbs
- High Sand Content: 25-35 lbs
- Steep slopes (3H:1V to 1H:1V)
- High Clay Content: 25-40 lbs
- High Sand Content: 40-50 lbs
- Hydroseeding application rate (per acre):
- Gentle to Moderate slopes (0 to 4H:1V)
- High Clay Content: ~20 lbs
- High Sand Content: 25-35 lbs
- Steep slopes (3H:1V to 1H:1V)
- High Clay Content: 25-40 lbs
- High Sand Content: 40-50 lbs
Precautions / Limitations
- Use only as directed – exceeding suggested application rates will not improve performance.
- See Silt Clear flyer for instructions on using Silt Stop Powders for water clarification
- Formulations are soil specific, sample analysis must be performed prior to application
- Avoid inhaling dust/ powder, may cause irritation. Use dust mask when applying Silt Stop®.
- Clean up spills quickly. Do not use water unless necessary, extremely slippery conditions will result.
- Consult manufacturer (Applied Polymer Systems) or authorized distributor to confirm proper site specific
Contact us to have your site’s soil and water matched with the correct APS product for free!
Other Products You Should Know About
Frequently Asked Questions
Here are some quick answers to common questions about APS polymers, flocculants, and stormwater testing. For more details, visit our full FAQ page.
General Company and Approach
- What does Applied Polymer Systems (APS) do?
APS develops and supports polymer-based solutions for erosion and sediment control during construction. - What makes APS different from other erosion control suppliers?
APS focuses on testing, technical support, and correct polymer selection rather than one-size-fits-all products.
🔗 APS technical support approach | Polymer performance testing - Who typically works with APS?
APS works with engineers, contractors, inspectors, and regulators involved in construction-phase stormwater compliance.
🔗 Industries served
Flocculants & Polymers
- What are flocculants?
Flocculants help fine sediment particles bind together so they can settle and be captured within BMPs (Best Management Practices). - Why are flocculants used in construction stormwater management?
They address fine silts and clays that traditional sediment controls struggle to capture. - Do flocculants replace erosion and sediment controls?
No. Flocculants enhance the performance of BMPs, not replace them. They work best in combination with properly designed and maintained basins, ditches, and inlet protection. - What is APAM?
APAM stands for Anionic Polyacrylamide, a polymer flocculant commonly used in construction stormwater applications. - Is all APAM the same?
No. Molecular weight and charge density vary, affecting how the polymer interacts with different soils.
🔗 Polymer selection and matching
Why Anionic PAM Is Important
- Why does the charge of a flocculant matter?
Polymer charge affects how it interacts with sediments and aquatic life. - Why is anionic PAM preferred for stormwater applications?
Anionic PAM carries a negative charge that does not readily bind to fish gills or aquatic organisms when used correctly. - Why are cationic polymers not used in construction stormwater?
Cationic polymers carry a positive charge and can bind strongly to fish gills, making them unsafe for stormwater applications.
🔗 Proper polymer selection guidance - How does APAM reduce risk to aquatic life?
When properly tested and applied, APAM binds fine sediment particles together so they settle and can be captured within BMPs, reducing turbidity and minimizing interaction with aquatic organisms downstream.