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CPH21/1

CPH21/1 water-based pigmented wood stain, classic walnut

Water-reducible pigmented wood stain in 'classic walnut'. Being pigment-based, it evens out colour variation and masks defects in the timber, levels well, has high hiding power and good lightfastness. According to the dealer, CFH1 binder (15–20 %) is already in the can, for more even application and less grain raising. Slow to dry and sensitive to low temperatures. Supplied as a concentrate, reduced with water before use.

  • Staining furniture made from any timber
  • Evening out colour variation and masking defects (pigment toning)
  • Mixing/matching shades with other CPH stains
  • Tinting exterior coatings

Mix calculator

g
Thinner500.0 %

When: Official water-reduction range (t-color.ru CPH21 page); application method given is spraying.

Additive

Ratio 100 : 500.0

ComponentWeigh out
CPH21/1part A83.3 g
Вода / waterThinner417 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Ask about CPH21/1

Answers are based on the CPH21/1 data and the products it mixes with.

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Mixing matrix

  • Вода / waterThinner
    % by weight: 400–600 %official% by volume: 400–600 %official

    Official water-reduction range (t-color.ru CPH21 page); application method given is spraying.

    More water = lighter, more see-through tone. Reduce with clean water only.

  • Вода / waterThinner
    % by weight: 400–1000 %catalog

    Wider range from the 2025–2026 catalogue — for lighter, more transparent tones.

    Catalogue gives a bare '%', weight vs volume not stated; for water the difference is negligible.

  • CFH1Additive
    % by weight: 0–200 %official% by volume: 0–200 %official

    CFH1 binder: per the dealer card, for more even application and less grain raising. The official CPH21 page gives only the 0–200 % range.

    The dealer card for CPH21/1 says 15–20 % CFH1 is already in the can, so extra binder is optional (0 %); the official 0–200 % range is given for plain CPH21. Raising the binder for wipe-on application is an inference by analogy (the 2022 catalogue says this of CPS, not CPH).

  • CFH1Additive
    % by weight: 0–400 %catalog

    Upper limit per the 2022 catalogue.

    2022 catalogue lists only CFH1 for CPH (CTH gets CFH1/CFH2).

  • CPH1 / CPH3 / CPH9 / CPH10 / CPH22 / CPH23 / CPH24 / CPH25 / CPH26Additive

    Shade matching.

    Intermix only with CPH stains (same chemistry).

Percentages are per 100 parts of component A.

Characteristics

Lightfastness
good lightfastness (qualitative)official
Levelling
good levellingofficial
Hiding
high hiding powercatalog
Drying · Before overcoating (h)
4 hdealer
Drying · Behaviour
Обладает продолжительной сушкой и чувствительностью к низким температурамcatalog
Drying · Conditions
20 °C

Colours

  • CPH21/1 · classic walnut

Application

HVLP

Consumption
80–100 g/m²official
Nozzle
1–1.3 mmrecommended
Pressure · air
1.5–2 bar at gun inlet (trigger pulled)recommended
Spray viscosity
as reduced — practically water-thin, below the valid range of a DIN4 cup (≈10–12 s, cup valid from ~25 s) s DIN4recommended
Coats
1 even coat, optional 2nd light coat to deepen tonerecommended
Recoat
4 h at 20 °C before sealerdealer
Sanding between coats
do not sand the stain; denib only after the first sealer coatrecommended
Gun setup
Fan fully open, distance 15–20 cm, 50 % overlap, keep the surface wet-looking but never poolingrecommended

Lay it on evenly without laps or runs; pooling leaves pigment blotches. Stir before and during use — pigment settles.

Conventional spray

Consumption
80–100 g/m²official
Nozzle
1.2–1.4 mmrecommended
Pressure · air
2–3 barrecommended

Low transfer efficiency (up to 40 % per the methods page) — more overspray; run good extraction.

Airmix (air-assisted airless)

Consumption
80–100 g/m²official
Nozzle
0.18–0.23 mm (tip 07–09 thou), narrow-to-medium fan mmrecommended
Pressure · fluid
10–20 barrecommended
Pressure · air
1–2 barofficial

For production work; good for big flat panels.

Cloth or pad

Consumption
80–100 g/m²catalog

Spray on, then wipe along the grain with a rag or sponge — evens the tone and highlights pores. Extra CFH1 probably helps when wiping (by analogy with CPS).

Roller

Consumption
10–20 g/m²catalog

Roller-coater application on flat panels/flooring lines.

Brush

Why ru
Водные красители обычно наносят кистью при подкраске; Technocolor указывает только распыление, распыление с протиркой и валик.

Not listed by the maker; for small repairs a brush or sponge followed by wiping off works.

Process and compatibility

Substrate preparation
Шлифование Р150, Р180dealer
Grain raising
пропитывание водой, затем сушка и тонкое шлифование для «поднятия» вставшего ворса (если древесину в дальнейшем обрабатывают водными морилками и/или водными ЛКМ)official
Goes over
bare sanded timber (P150–P180)
Goes under
HTL20 SM
Goes under (other)
acrylic (2K) and PU sealers, e.g. ATS20, PTS60recommended
System
Шлифование Р150, Р180,CPH 80–100 г/м²,Сушка 4 ч при 20 °C,HTL20 SM 150 г/м²,Сушка 4 ч,Шлифование Р280, Р320,HTL20 SM 150 г/м²,Сушка 8 ч при 20 °Cdealer
Sanding
do not sand the stain coat itselfrecommended
Temperature and humidity
≥ 18–20 °C material and room, RH 50–70 %; dry at ~20 °C or warmerrecommended
Don'ts
  • Don't work in a cold shop — it is temperature-sensitive and slow-drying
  • Don't overcoat sooner than 4 h at 20 °C
  • Don't mix with solvent stains (CPS, CTU, CLT)
  • Don't let it pool or run — pigment blotches
  • Don't sand the stain coat

Storage

Storage temperature
+5…+30 °C, protect from frostrecommended
Packaging
1 кг,5 кг,25 кгdealer

Safety: Water-reducible. Use extraction or a respirator when spraying, protect eyes and skin. No SDS found.

Mixed into

CPH23/1

Sources

Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” is our engineering estimate (hover to see the reasoning).

Not covered by the sources
  • solids_pct
  • viscosity (concentrate and ready-to-spray)
  • density
  • flash-off / dust-free / touch-dry times
  • dry time at temperatures other than 20 °C
  • exact CFH1 content already in CPH21/1 beyond dealer's 15–20 %
  • shelf life
  • storage temperature (official)
  • SDS / safety data
  • Technocolor TDS — none found online; dealer page has no technical-characteristics table for CPH
  • official compatibility with solvent-borne 2K sealers
  • no official finishing schedule uses CPH codes
  • whether CPH21/1 differs from plain CPH21 in any way (pre-added CFH1 is stated only on the dealer card; official CPH21 page does not mention it)
  • no 'Все технические характеристики' table on the dealer page; 'Документация' tab has no PDF