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Stains and dyesDye

CLT4

CLT4 Kromolux dye concentrate, antique walnut

Highly concentrated transparent dye (binder-free stain) from Milesi's Kromolux series in antique walnut. Very clear and even; at higher strength it goes dark while staying transparent. Dilutes with water or solvent, with or without a binder.

  • Staining all kinds of timber, veneer and solid
  • Furniture, fronts, mouldings and frames, general wooden articles
  • Toning and evening out colour variation under PE, PU and NC lacquers

Mix calculator

g
Thinner750.0 %

When: Fast, strong thinner — for fine-pored timber (beech, birch, maple, alder) and short flash-off between operations.

Additive

Ratio 100 : 750.0

ComponentWeigh out
CLT4part A58.8 g
S10Thinner441 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Pot life of the mix: not applicable — single-component, no reaction; keep diluted mix closed and use within the shift.

Ask about CLT4

Answers are based on the CLT4 data and the products it mixes with.

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Mixing matrix

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

    Fast, strong thinner — for fine-pored timber (beech, birch, maple, alder) and short flash-off between operations.

    Thinner selection per the Technocolor 2025–2026 catalog thinner table. S10 is also the gun-cleaning solvent per its official page.

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

    Medium evaporation — medium-pored timber (cherry, walnut, tight ash); the default for a solvent-borne stain.

    S12 is the dye thinner per its official page, and it is the thinner used in the dye steps of the official schedules.

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

    Slow — open-pored timber (oak, ash), large panels, hot shop: stays wet longer, fewer blotches and lap marks.

    Dealer lists S90 as 'slow dye thinner'.

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

    Water dilution — less odour/VOC, raises the grain more and dries much slower (Milesi TDS: 8 h at 20 °C vs. minutes on solvent).

    Deionised (distilled) water only — tap water makes the dye flocculate and lose colour stability (dealer note). Before a water stain, raise the grain with a damp sponge, dry and denib at P180–P220.

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

    Listed by Technocolor as a thinner. The Milesi TDS uses LZC97 as a small-share co-solvent alongside the main thinner (see the TDS rows).

    LZC97's exact function is not documented by Technocolor; no product page.

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

    Binder for the solvent-borne stain (with S10/S12/S90): locks the dye in, less bleeding/lifting when the sealer goes on, more even colour on end grain.

    Role: binder. CFS1 = solvent-borne and CFH1 = water-borne follows from the schedules (CFS1 paired with S12, CFH1 with water); the dealer's ОР/ВР labels are listed in the opposite order.

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

    Binder for the water-diluted stain.

    0 % = plain dye stain; with binder the colour holds better under the sealer.

  • LZC97 / LZC1000Thinner
    % by weight: CLT 1 : LZC97 0.5 : LZC1000 9.5 (≈ LZC97 50 % + LZC1000 950 %)datasheet

    Milesi's suggested solvent dilution. LZC1000 is a Milesi code; in the Technocolor line its place is taken by S10/S12/S90 per the official page.

  • LZC97 / WATERThinner
    % by weight: CLT 1 : LZC97 1 : water 14 (≈ LZC97 100 % + water 1400 %)datasheet

    Milesi's suggested water dilution.

  • LZC1000 / LZC1024 / LZC97 / LTC5 / WATERThinner
    % by weight: 500–800 %datasheet

    Milesi TDS: manual spray 5–20 g/m², fixed automatic airmix/airless and swinging-arm guns 10–20 g/m² — 500–800 % dilution; rotating carousel 5–20 g/m² — 700–1500 %.

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

    Raised-panel doors (PU): stain 80–100 g/m², 5 min at 20–25 °C, then PTS20+C25+S50 sealer.

    The finishing schedule names the generic code 'CTU' (universal transparent dye). CLT4 sits in the same 'Universal dyes' section on t-color.ru, so the recipe is carried over as a guide; that mapping is our interpretation, not an explicit CLT4 instruction.

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

    Mouldings and frames (UV): stain 80 g/m², 5 min at 25–30 °C, then VTS40041 UV sealer.

    The finishing schedule names the generic code 'CTU' (universal transparent dye). CLT4 sits in the same 'Universal dyes' section on t-color.ru, so the recipe is carried over as a guide; that mapping is our interpretation, not an explicit CLT4 instruction.

  • CFH1 / WATERAdditive
    % by weight: CFH1 400 % + вода/water 1000 %schedule

    Open-pore oak kitchen fronts: stain 80–100 g/m², 20 min at 20–25 °C, PTS60+C26+S50 sealer.

    This schedule is written for the water dye CTH, not CLT; 400 % CFH1 exceeds CLT4's official 0–200 % — stay within 0–200 % for CLT4.

Percentages are per 100 parts of component A.

Characteristics

Viscosity
24 ± 2 s (dealer prints no unit; TDS gives seconds), 24 ± 2 s
Density
0.945 ± 0.05 g/cm³ (specific gravity at 20 °C)datasheet
Drying · Conditions
20 °C, 70 % RH (TDS test conditions)
Drying · Room temp (solvent)
30 s (LZC1000 thinner)datasheet
Drying · Room temp (water)
8 h (water thinner)datasheet
Drying · IR drying 60 °C (solvent)
10 mindatasheet
Drying · IR drying 60 °C (water)
20 mindatasheet
Pot life
not applicable — single-component, no reaction; keep diluted mix closed and use within the shiftrecommended
Thixotropy
norecommended
Gloss
not applicable — no filmrecommended

Colours

  • CLT4 · Antique walnut

Application

HVLP

Nozzle
1–1.3 mmrecommended
Pressure · fluid
gravity cup, no fluid pressurerecommended
Pressure · air
1.5–2 bar inlet (gun trigger pulled); ≈0.5–0.7 bar at caprecommended
Spray viscosity
as diluted (500–1000 %), ~water-thin — do not thin to a cup timerecommended
Consumption
80–100 g/m² ready mixofficial
Coats
1 even full wet pass (2 light crossing passes on large panels); add colour by a second pass, not by floodingrecommended
Flash-off · Solvent
5 min at 20–25 °C (CFS1+S12 mix)schedule
Flash-off · Water
20 min at 20–25 °C (CFH1+water mix)schedule
Recoat · Sealer (solvent)
after 1 min (thinned with LZC1000)datasheet
Recoat · Sealer (waterborne)
after 8 h (thinned with water) at 20 °Cdatasheet
Sanding between coats
do not sand the stain coat itself; denib the first sealer coat at P240–P320recommended
Consumption, TDS (g/m²)
5–20 g/m² (Milesi TDS, manual spray at 500–800 % dilution; apparently concentrate)datasheet

Hold the gun square at 15–20 cm, 50 % overlap. On profiles do edges and recesses first, then the field. Stir the mix before filling.

Conventional spray

Nozzle
1–1.2 mmrecommended
Pressure · air
2–3 bar at gunrecommended
Consumption
80–100 g/m² ready mixofficial
Consumption, TDS (g/m²)
5–20 g/m² (Milesi TDS, manual spray at 500–800 % dilution; apparently concentrate)datasheet

Classic air spray — the mainstream method per the methods page (up to 40 % transfer).

Airmix (air-assisted airless)

Nozzle
0.18–0.23 mm (07–09 thou), narrow 20–40° fanrecommended
Pressure · fluid
4–8 barrecommended
Pressure · air
0.8–1.5 barrecommended
Consumption
10–20 g/m² (TDS figure — appears to be concentrate, see notes)datasheet

The Milesi TDS states 10–20 g/m² for fixed automatic airmix — at 500–800 % dilution this reads as concentrate, i.e. ~60–180 g/m² of ready mix (brackets the official 80–100 g/m²).

Airless

Nozzle
0.18–0.23 mm (07–09 thou)recommended
Pressure · fluid
30–60 barrecommended
Consumption
10–20 g/m² (TDS figure, likely concentrate)datasheet

For hand work prefer airmix/HVLP — airless has a coarser fan and more blotch risk.

Automatic rotating spray

Consumption
5–20 g/m² (automatic rotating spray guns / carousel, TDS; dilution 700–1500 %)datasheet

Milesi TDS covers automatic rotating (carousel) spray guns at 5–20 g/m² and 700–1500 % dilution. This is not electrostatic application — the TDS does not mention electrostatic use for CLT.

Process and compatibility

Substrate preparation
Sand flats P150 → P180 → P220; profiles with sanding mats/sponges K60–K80schedule
Goes over
bare sanded wood
Sanding
Never sand the dyed surface directly; sand the first sealer coat P240–P320 (flats) / K120 (profiles) per schedulerecommended
Temperature and humidity
TDS data at 20 °C / 70 % RHdatasheet
Don'ts
  • Don't dilute with tap water — deionised only
  • Don't exceed 200 % CFS1/CFH1 binder
  • Don't flood the surface — make a second light pass instead
  • Don't sand the bare dye coat — sand the sealer
  • Don't seal a water-diluted stain before it is fully dry (TDS: ~8 h at 20 °C or 20 min at 60 °C)

Storage

Shelf life
8 months from deliverydatasheet
Storage temperature
18–25 °C, tightly closed, protected from moisturedatasheet
Packaging
1 L,5 Ldealer

Safety: Composition and hazard class are not published (no CLT4 SDS found). Treat the concentrate and S10/S12/S90 mixes as flammable: spray in an extracted booth, no ignition sources, A2P2 respirator and nitrile gloves; keep solvent rags in a closed metal bin.

Used in finishing systems

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_pct (blank in Milesi TDS, not on official/dealer pages)
  • lightfastness rating (no sourced figure)
  • hardness/elasticity/chemical resistance — not applicable to a binder-free dye on its own
  • LZC97 function and Technocolor product page (no official or dealer page)
  • CFS1/CFH1 product pages and their own data (no official/dealer page found)
  • consumption discrepancy: official 80–100 g/m² (ready mix) vs Milesi TDS 5–20 g/m² (apparently concentrate)
  • SDS / hazard classification for CLT4
  • no Technocolor-issued TDS for CLT4; data sheet used is Milesi's (IVM) CLT series TDS, rev. I, Oct 2006
  • CLT not covered in Technocolor 2025–2026 catalog (only CTU/CPS/CTH dyes)