Weed Force Holdfast Penetrant Wetting Agent 1L
- Active ingredient
- Polyether Modified Polysiloxane 1020 g/L
Weed Force Holdfast Organosilicone Penetrant and Wetting Agent is a non-ionic wetter/spreader/penetrant for use with agricultural chemicals to improve coverage, penetration and uptake on woody, noxious and perennial weeds.
Use rates (per 100 L spray mixture):
- Fungicides, insecticides, miticides, foliar micro-nutrients: 30-60 mL
- Herbicides, general post emerge: 50-100 mL
- Herbicides, general low volume: 100-200 mL
- Woody & noxious weeds and perennial weeds (including blackberry, bracken fern and gorse): hand gun 200 mL; boom spray 200-500 mL
Active constituent: 1020 g/L Polyether Modified Polysiloxane
Always read the registered label before use (APVMA 83402).
Active Ingredient: Polyether Modified Polysiloxane 1020 g/L
Chemical Schedule: Unscheduled
APVMA Reg. No: 83402
Always read the current registered product label before use. Dose rates and withholding periods on this page are provided as a guide only. The registered label supplied with the product is the legal document and takes precedence. If in doubt, contact TGRM on (07) 5482 1692 or the manufacturer directly.
Always read the label and follow directions for use. The registered label is the legal document governing use of this product.
Download the Safety Data Sheet for this product:
Download SDS (PDF)Required for safe handling and storage. Keep on-site per WHS regulations.
Common Questions
What is Holdfast used for?
Holdfast is a non-ionic wetter/spreader/penetrant for use with agricultural chemicals to improve coverage, penetration and uptake on woody, noxious and perennial weeds.
What rate do I use with herbicides?
Per 100 L spray mixture: general post emerge 50-100 mL; general low volume 100-200 mL; woody & noxious weeds and perennial weeds (including blackberry, bracken fern and gorse) 200 mL by hand gun or 200-500 mL by boom spray. Always follow the pesticide label where an organosilicone is recommended.
When do I add it to the tank?
Mix the pesticide with water when the tank is about 30% full, add Holdfast when the tank is nearly full, then complete filling the tank.
Can it be used with any pesticide?
Do not use Holdfast if the pesticide manufacturer prohibits surfactants. Rates for fungicides, insecticides, miticides and foliar micro-nutrients are 30-60 mL per 100 L spray mixture.
Do you ship this product Australia-wide?
As a regulated chemical, this product can only be transported by road freight, it cannot be sent via Australia Post or air freight. Call us on (07) 5482 1692 before ordering to confirm delivery to your area.
Mainland Australia only — we’re unable to deliver this product to Tasmania. It is classified as environmentally hazardous (a marine pollutant), so it is regulated as a dangerous good for sea and air transport and our freight carriers will not accept it on those routes. Because every route to Tasmania and offshore destinations needs a sea or air leg, we can only deliver it to mainland addresses by road. Call us on (07) 5482 1692 if you are unsure about your address.
Can you deliver this to Tasmania?
Not at this time. This product is environmentally hazardous (a marine pollutant), so it is regulated as a dangerous good for sea and air freight and our carriers do not accept it on those routes. As every route to Tasmania involves a sea or air crossing, we can only deliver it within mainland Australia by road. If you are in Tasmania, please call us on (07) 5482 1692 and we will help you find an alternative product.
Can I Click & Collect from Gympie?
Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.