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Koch-Chemie Green Star dilution ratios (with calculator)

Exterior/engine 1:5–1:30, interior 1:10–1:20, floors 1:40–1:120. Includes the critical VDA Class A note (≤5 minute dwell, max 1:3).

Exterior & engine bayInterior textilesFloor cleaningCustom (open calculator)
Active ratio80:1 (water:product)
Bottle1 liter canister
Open in calculatorJump to presets

Exact amounts (pre-calculated)

  • Part A12.35 mL by volume12.3 g
  • Part B987.7 mL by volume987.7 g

Add 12.35 mL Part A, 987.7 mL Part B; fill to 1 L.

Use-case presets

Exterior & engine bay

5:1 (water:product)

Heavy degreasing on engines and exterior plastics – start here, then dilute further as needed.

  • Work panel by panel and rinse before product dries.
500 mL spray bottle
Product: 83.33 mL (2.818 oz)
Water: 416.7 mL (14.09 oz)
1 liter canister
Product: 166.7 mL (5.636 oz)
Water: 833.3 mL (28.18 oz)
32 oz bottle
Product: 157.7 mL (5.333 oz)
Water: 788.6 mL (26.67 oz)
Interior textiles

15:1 (water:product)

Midpoint of the 1:10–1:20 interior range for fabrics and plastics.

  • Extract or wipe residue thoroughly to avoid alkalinity marks.
500 mL spray bottle
Product: 31.25 mL (1.057 oz)
Water: 468.8 mL (15.85 oz)
1 liter canister
Product: 62.5 mL (2.113 oz)
Water: 937.5 mL (31.7 oz)
32 oz bottle
Product: 59.15 mL (2 oz)
Water: 887.2 mL (30 oz)
Floor cleaning

80:1 (water:product)

Mid-range of the 1:40–1:120 guidance for shop floors and industrial surfaces.

  • Scrub and rinse – do not let solution dry without removal.
500 mL spray bottle
Product: 6.173 mL (0.2087 oz)
Water: 493.8 mL (16.7 oz)
1 liter canister
Product: 12.35 mL (0.4175 oz)
Water: 987.7 mL (33.4 oz)
32 oz bottle
Product: 11.68 mL (0.3951 oz)
Water: 934.7 mL (31.6 oz)

Safety and compliance

Do not use on
  • Unprotected aluminium if used above 1:10
  • Sensitive leather or raw textiles
PPE
  • Chemical-resistant gloves
  • Eye protection
  • Respirator in confined spaces
Notes
  • Observe VDA Class A guidance: maximum 1:3 ratio and ≤5 minute dwell on sensitive trims.
  • Do not let the cleaner dry on surfaces.
  • VDA Class A: Rinse within 5 minutes (max 1:3).
MixByParts is not affiliated with Koch-Chemie. Ratios shown are from the manufacturer and authoritative guidelines; always verify on your bottle or TDS for your exact SKU.

Sources & verification

FAQ

Can I use Green Star in a foam cannon?

Yes, but stay within the recommended ratios. Start at 1:10 and rinse thoroughly to avoid streaking.

What does the VDA Class A note mean?

It limits maximum strength to 1:3 and dwell time to five minutes on sensitive automotive finishes. Always rinse before the dwell limit.

Is Green Star safe on floor sealants?

Test an inconspicuous area first. The 1:80 mix is usually safe on epoxy or sealed concrete when rinsed promptly.

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