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Stains and dyesDye

CLT7

CLT7 Kromolux wood dye, classic walnut

Concentrated transparent wood dye (stain) from the Kromolux range by MILESI, no binder, classic-walnut shade. Very even colour and high clarity; the high strength gives deep dark tones while the grain still shows through. Reduce 500–1000 % with solvent thinner (S10/S12/S90/LZC97) or deionised water, with or without CFS1/CFH1 binder (up to 200 %). Intermixes with the other dyes of the series in any ratio. Can be topcoated with polyester, polyurethane and nitrocellulose lacquers.

  • Staining any timber — veneer and solid
  • Furniture, mouldings, frames, general joinery — spray
  • Walnut tone on pale timber (beech, birch, alder, pine, oak)
  • Shade matching mixed with the other CLT dyes

Mix calculator

g
Thinner750.0 %

When: Always — CLT7 is supplied as a concentrate. 500 % for a deep, dark walnut; 1000 % for a light tint.

Additive

Ratio 100 : 750.0

ComponentWeigh out
CLT7part A58.8 g
S10 / S12 / S90 / LZC97 / WATERThinner441 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Ask about CLT7

Answers are based on the CLT7 data and the products it mixes with.

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Mixing matrix

  • S10 / S12 / S90 / LZC97 / WATERThinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Always — CLT7 is supplied as a concentrate. 500 % for a deep, dark walnut; 1000 % for a light tint.

    Official line: 'S10/S12/S90/LZC97/water 500–1000 %'. The dealer gives the same range for S10/S12/S90/water and does not mention LZC97.

  • S10Thinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Fast, strong thinner — for staining close-grained timber (beech, birch, maple, alder, cherry), small parts, a cool shop.

    Thinner roles per the thinner table in the Technocolor 2025–2026 catalog.

  • S12Thinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Medium evaporation — for medium-pore timber (walnut, mahogany); the all-round choice for hand spraying. Technocolor's stain schedules use S12.

    Thinner roles per the thinner table in the Technocolor 2025–2026 catalog.

  • S90Thinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Slow — for open-pore timber (oak, ash, anegre), big panels, shop above ~25 °C: gives the dye time to soak into the pores, fewer stripes and lap marks.

    Thinner roles per the thinner table in the Technocolor 2025–2026 catalog.

  • WATERThinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Water-borne stain: less smell/VOC, pops the figure more, but raises the grain and dries slowly (8 h before sealer per the TDS).

    Deionised water only — tap water makes the dye flocculate and hurts colour stability (dealer note). With water use only the water-borne binder CFH1 (CFS1 is the solvent binder).

  • LZC97Thinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    As a co-solvent alongside the main thinner or water — in the CLT TDS LZC97 is a small share of the blend (0.5–1 part per part of dye), not used alone. The Milesi LZC-series TDS describes LZC97 as a slow thinner for roller stains (CIT series).

    No LZC97 page on t-color.ru or at the dealer. Description from the Milesi LZC-series TDS (SG 0.918, slow).

  • LZC97 / LZC1000Thinner
    % by weight: 1 : 0.5 : 9.5 (CLT : LZC97 : LZC1000) — 1000 % totaldatasheet

    Manufacturer's (Milesi) suggested solvent dilution.

    LZC1000 is not in the Technocolor range. Per the Milesi LZC TDS it is a fast acetone-based thinner (SG 0.790) for gun cleaning, spray stains and polyester; nearest Technocolor equivalent by purpose is S10 (fast, for stains).

  • LZC97 / WATERThinner
    % by weight: 1 : 1 : 14 (CLT : LZC97 : water) — 1500 % totaldatasheet

    Manufacturer's suggested water dilution.

    Deionised water. 1500 % is beyond Technocolor's official 1000 % ceiling — expect a lighter tone.

  • CFS1Additive
    % by weight: 0–200 %official% by volume: 0–200 %official

    Solvent-borne spray binder — with S10/S12/S90: the sealer doesn't drag the dye, more even colour on end grain, less grain raising.

    0 % is allowed. CFS1 is the 'Связующее ОР для распыления' (solvent-borne spray binder) — stated outright on the dealer's CPS10 page, which lists CFS1 alone. On the CLT7 page the dealer lists codes 'CFH1 / CFS1' against labels 'solvent / water' in swapped order — don't be misled.

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

    Water-borne spray binder — when CLT7 is reduced with deionised water.

    Don't put CFH1 into a solvent-reduced batch. CFH1 is the 'Связующее ВР для распыления' (water-borne spray binder): the water-only CPH dyes (e.g. CPH9) list CFH1 only, and the dealer labels CFS1 as the solvent binder.

  • CFS1 / S12Additive
    % by weight: CTU 100 : CFS1 200 : S12 500 %schedule

    'Panel doors, PU' schedule — dye + binder under a PU system, 80–100 g/m², 5 min at 20–25 °C.

    The schedule names CTU, not CLT; CLT7 is the same class (transparent concentrate, same S10/S12/S90 at 500–1000 %, CFS1 0–200 %, 80–100 g/m²), and the recipe sits inside CLT7's official ranges.

  • CFS1 / S12Additive
    % by weight: CTU 100 : CFS1 150 : S12 500 %schedule

    'Mouldings and frames, UV' schedule — 80 g/m², 5 min at 25–30 °C before the UV sealer.

    Analogue: the schedule uses CTU, not CLT (see above).

Percentages are per 100 parts of component A.

Characteristics

Viscosity
24 ± 2 sdealer
Density
0.965 ± 0.05 g/cm³ (specific gravity at 20 °C)datasheet
Concentration
very high concentrationofficial
Uniformity
excellent uniformityofficial
Drying · Touch-dry
30 s (LZC1000 solvent); 8 h (water)datasheet
Drying · Overcoat with sealer
after 1 min (solvent-reduced); after 8 h (water-reduced)datasheet
Drying · IR drying 60 °C
10 min (solvent); 20 min (water)datasheet
Drying · Conditions
20 °C, 70 % RH (TDS test conditions)
Overcoatable with
PE,PU,NCdatasheet
Characteristics page
vocabulary per the official characteristics pageofficial

Colours

  • CLT7 · 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
Pressure · fluid
0.3–0.8 bar (pressure pot) or gravity cuprecommended
Spray viscosity
10–13 s DIN4recommended
Coats
1–2 coatsrecommended
Flash-off
5 minschedule
Recoat
sealer after 1 min (solvent, LZC1000) / after 8 h (water)datasheet
Sanding between coats
Never sand the stain coat.recommended

15–20 cm distance, 50 % overlap, constant speed and distance — a dye shows every stripe. Use S12/S90 on verticals and edges. End grain soaks up colour fast — go lighter there. (Recommendation.)

Conventional spray

Consumption
80–100 g/m²official
Nozzle
1–1.2 mmrecommended
Pressure · air
2–3 bar at gun inletrecommended
Spray viscosity
10–13 s DIN4recommended

Hand spray; TDS dilution 500–800 %.

Airmix (air-assisted airless)

Consumption
10–20 g/m²datasheet
Nozzle
0.18–0.23 mmrecommended
Pressure · fluid
4–8 barrecommended
Pressure · air
1–2 barofficial

For automatic guns/reciprocators on a line; hand airmix on dye only with the smallest tip.

Airless

Consumption
10–20 g/m²datasheet
Nozzle
0.18–0.23 mmrecommended
Pressure · fluid
40–70 barrecommended

Fixed automatic guns on a line only; don't hand-spray dye airless — far too much output.

Electrostatic

Consumption
5–20 g/m²datasheet

The TDS row is not electrostatic but an 'automatic rotating spray gun (carousel)', 700–1500 % dilution. Filed here for lack of a separate method; electrostatic application is not claimed anywhere for CLT7.

Process and compatibility

Substrate preparation
Flat surfaces belt-sanded P150 → P180 → P220, profiles with abrasive mats K60/K80 ('Panel doors, PU' schedule), de-dust. Coarser grit = more uptake, darker tone. For water-reduced stain, wet the wood first, dry and fine-sand the raised grain.schedule
Goes over
bare wood (sanded)
Goes under
polyester sealers/lacquers / PU sealers/lacquers / NC lacquers / UV sealers (per Technocolor UV schedule for the analogous CTU dye)
Sanding
Never sand the dye coat — you'll cut through to bare wood. Knock down raised fibres on the first sealer coat: the PU door schedule sands the PTS20 sealer at P240/P280/P320, profiles with K120 mat; go gently on edges.schedule
Temperature and humidity
20 °C, 70 % RH referencedatasheet

Storage

Shelf life
8 months from deliverydatasheet
Storage temperature
18–25 °C, tightly closed, protect from moisture and contaminationdatasheet
Packaging
1 l, 5 l (3 191 ₽/l, on order, checked 2026-10-04)dealer

Mixed into

CFH1 / CFS1 / CLT10 / CLT3 / CLT5 / LZC97

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 content — not published (TDS field blank, dealer silent)
  • Dealer viscosity cup not stated (TDS: ISO 3 mm, 24 ± 2 s)
  • Lightfastness rating, chemical resistance — not published
  • No SDS / hazard classification found
  • Conflict: spread 80–100 g/m² (Technocolor/dealer) vs 5–20 g/m² manual spray (Milesi TDS, basis not stated)
  • TDS is Oct 2006 rev. I — may be superseded
  • Drying times are from the Milesi TDS only — no Technocolor-specific drying data
  • No official schedule uses CLT7 directly (schedule ratios are CTU analogues)
  • CLT7 not in the 2025–2026 catalog transcripts
  • Nozzle/pressure, spray viscosity, coats are derived, not Technocolor data
  • LZC97 and LZC1000 (TDS solvents) — no Technocolor/dealer pages; described only in the Milesi LZC-series TDS; LZC1000 not sold by Technocolor
  • Dealer CLT7 mix table shows binder labels swapped ('CFH1 / CFS1' vs 'ОР / ВР'); CFS1 = solvent binder confirmed on dealer CPS10 page
  • Substrate grit split veneer vs solid is not published; schedule gives P150–P220 for flat surfaces only