CPH21
CPH21 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
Ratio 100 : 500.0
| Component | Weigh out |
|---|---|
| CPH21part A | 83.3 g |
| Вода / waterThinner | 417 g |
| Total | 500 g |
Covers roughly 5.56 m² at 90 g/m².
Ask about CPH21
Answers are based on the CPH21 data and the products it mixes with.
Mixing matrix
- Вода / waterThinner% by weight: 400–600 %official% by volume: 400–600 %official
Standard reduction for spraying (official product page).
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
Binder: improves pigment lock-down, evenness and reduces grain raising; use more when wiping the stain or going under water-based lacquers.
Per the dealer, 15–20 % CFH1 is already in the product (CPH21/1), so extra binder is optional (0 %).
- CFH1Additive% by weight: 0–400 %catalog
Upper limit per the 2022 catalogue.
2022 catalogue lists only CFH1 for CPH (CTH gets CFH1/CFH2).
Shade matching.
Intermix only with CPH stains (same chemistry).
| Role | Material | % by weight | % by volume | When |
|---|---|---|---|---|
| Thinner | Вода / water | 400–600 %official | 400–600 %official | Standard reduction for spraying (official product page).More water = lighter, more see-through tone. Reduce with clean water only. |
| Thinner | Вода / water | 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. |
| Additive | CFH1 | 0–200 %official | 0–200 %official | Binder: improves pigment lock-down, evenness and reduces grain raising; use more when wiping the stain or going under water-based lacquers.Per the dealer, 15–20 % CFH1 is already in the product (CPH21/1), so extra binder is optional (0 %). |
| Additive | CFH1 | 0–400 %catalog | — | Upper limit per the 2022 catalogue.2022 catalogue lists only CFH1 for CPH (CTH gets CFH1/CFH2). |
| Additive | CPH1 / CPH3 / CPH9 / CPH10 / CPH22 / CPH23 / CPH24 / CPH25 / CPH26 | — | — | 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 · 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 — water-thin, ~10–12 s DIN4 (below the DIN4 cup's valid range; viscosity not controlled by cup for this product) 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 helps when wiping.
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
CFH1 / CPH22 / CPH22/1 / CPH23 / CPH23/1 / CPH25 / CPH25/1 / CPH26 / CPH26/1 / CPH3 / CPH6 / CPH60
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).
- official page: properties, spray 80–100 g/m², water 400–600 % w/v, CFH1 0–200 % w/v
- dealer: application, CFH1 15–20 % pre-added, intermixable with all CPH, system with HTL20 SM, drying 4 h, packaging/price; no technical-characteristics table
- 2022 catalog: water 400–600 %, CFH1 0–400 %, long drying, low-temperature sensitivity, CPH colour list
- application-methods page (airmix 1–2 bar air, transfer efficiencies)
- wood prep: raise the grain before water stains
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