Sonitron Fiberinse is a mild acid rinse, sometimes called a sour, for carpet and upholstery cleaning. Sonitron states that it improves the feel of some carpets by removing the mineral residues left by hard water, neutralises alkaline residues and prevents browning, and is highly concentrated for economy in use.
Why Use an Acid Rinse?
Most presprays are alkaline. Rinsing with plain water leaves some of that alkalinity in the fibre, where it attracts soil, stiffens the pile and raises the risk of browning as the carpet dries. A mild acid rinse through the extraction machine brings the fibre back towards neutral as it flushes the prespray out.
What It Is For
- Extraction rinse after an alkaline prespray
- Hard-water areas, where mineral residue leaves carpet feeling harsh
- Reducing the risk of browning on carpet and upholstery
Directions for Use
Sonitron does not publish dilution rates for Fiberinse on its website. It is highly concentrated, so follow the rate on the container label, and ask us for it if you need it before you order.
Safety
Sonitron's safety data sheet (SDS 5020, revision 3, 3 February 2026) does not classify Fiberinse as hazardous to health, and no special protection is required in normal use. It is marked harmful to aquatic life, so do not pour concentrate into stormwater. For large spills, wear eye protection and gloves. Read the full SDS before first use.
Specifications
| Brand | Sonitron |
|---|---|
| SKU | SON1276-05 |
| Pack | 5 L (Sonitron also packs 20 L) |
| Type | Mild acid rinse for carpet and upholstery cleaning (SDS) |
| Appearance | Pink liquid, mild odour (SDS) |
| pH | 3.0–4.5 (SDS) |
| Specific gravity | 1.03 (SDS) |
| Hazard classification | Not classified for health; H402 harmful to aquatic life (SDS) |
| Transport | Not dangerous goods (SDS) |
| Dilution | Not published on Sonitron's website — see the container label |
Frequently Asked Questions
Will it remove browning that is already there?
Sonitron describes it as preventing browning, not removing it. For existing cellulosic browning use a browning remover such as Sonitron Browning Remover Concentrate.
Can I use it on upholstery?
Yes. Sonitron lists both carpet and upholstery.
Does it replace the prespray?
No. It is the rinse step. The prespray does the cleaning; the rinse removes it and leaves the fibre closer to neutral.
Documents
Related Products
Not sure which rinse suits your system? Tell us the prespray you use and your water and we will help you choose before you order.
