nextzett Kristall Klar Washer Fluid Concentrate

No. The product label states explicitly 'NO Freeze Protection — Once diluted, product will freeze at approximately 32°F (0°C).' It is a warm-weather or year-round cleaning concentrate for climates that do not see freezing temperatures. For freeze protection, nextzett makes a separate Anti-Frost formula.

The label specifies approximately 0.7 fl oz (20 ml) of concentrate per gallon of water — a 1:200 dilution ratio. One 8.5 fl oz bottle makes over 13 gallons of working fluid. Mix only with untreated tap water; distilled or softened water may cause foaming.

The DANGER signal word reflects H318 (serious eye damage, Cat 1) from SDS §2 — alkaline surfactant concentrates at pH 10.6 can cause serious eye injury. The H350 carcinogen classification (Cat 1A) from ethanol's IARC Group 1 designation also appears in SDS §2. These are genuine SDS-derived classifications, not generic boilerplate.

The health deductions reflect the DANGER signal word (−2.0), H302 harmful if swallowed (−1.0), H315 skin irritation (−0.3), Prop 65 warning from ethanol (−1.5), and the PPE eyes-required tier from H318 (−0.25). The product avoids methanol's acute systemic toxicity H-codes (H301/H331/H370), which is a genuine improvement — but the remaining SDS §2 classifications still produce a mid-range health score.

Yes — SDS §13 confirms the surfactants are biodegradable per the EU Detergents Regulation. This is an SDS-sourced confirmation, not a marketing claim, and is credited in the environment score.