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Merit Topas 25

A two-component acid-catalyzed lacquer for interior surfaces.

The paint is solvent-borne
The coverage of the paint on rough surfaces
The coverage of the paint on smooth surfaces

Fast-drying lacquer

Merit Topas 25 is a two-component fast-drying lacquer, which dries approx. 20-30% faster than standard Merit lacquers. It means higher productivity, because the lacquered products are sandable and stackable more quickly.

Good filling properties and aromatic solvent free

All Merit Topas lacquers have good filling properties. Another benefit of these lacquers is, that  they do not contain aromatic solvents making them more eco-friendly.

Merit Topas 25 is mainly used for:

Stain, lacquer and paint systems for wood industries


Merit Topas 25 - Acid-catalysed lacquer

Merit Topas 25
DESCRIPTION A two-component acid-catalyzed lacquer.

A fast drying lacquer with good filling properties for indoor use.

Recommended uses Recommended for furniture, doors and other wooden surfaces.

Features Contains no aromatic solvents.
Gloss groups Semi-matt
Emission classification The emission level of this product fulfils the requirements of E1 classification for surface treatment materials. The product has been tested according to the standard EN 717-1, and its formaldehyde emission rate is less than 0.124 mg/m3 air.

Recommended spreading amounts (unthinned)

Theoretical coverage




30–40 µm

80–100 g/m2

9–12 m2/l


Practical coverage depends on the application method, painting conditions and the shape and roughness of the surface to be coated.

Thinner 1035 and 1058
Mixing ratio Lacquer 100 parts by volume 005 2793
Hardener 10 parts by volume 006 2098
Application method

Airless, air assisted airless and conventional spraying.


Airless application with the viscosity 20 –30 s (DIN 4) can be reached with approximately 5–20 % of thinning. Nozzle tip 0.009" to 0.013" and the nozzle pressure 100–160 bar. Spray angle shall be chosen according to the shape of the object.


Air assisted airless application with the viscosity 20–30 s (DIN 4) can be reached with approximately 5–20 % of thinning. Nozzle tip 0.009"–0.013" and the nozzle pressure 40–120 bar. Atomising air pressure is recommended to be used with pressure 1–3 bar. Spray angle shall be chosen according to the shape of the object.


Conventional application with the viscosity 20–30 s (DIN 4) can be reached with approximately 5–20 % of thinning. Nozzle tip 1.0–1.8 mm is recommended to be used with pressure 2–3 bar.

Pot-life (+23°C) 3 days.
Drying times

80100 g/m²


+23 ºC

+50 ºC

Touch dry, after

20–30 min

10–15 min

Dry to sand, after

2–3 h

20 – 25 min

Dry to pack, after

24 h

30 –40 min


Stacking temperature below 35 ºC.


Drying and recoating times are related to the film thickness, temperature, the relative humidity of the air and ventilation.

Solids volume 36±2% volyme
44±2% weight
Density 1.0 kg/litre
Product code 005 2793

Application conditions The surface to be treated has to be clean and dry. During application and drying the temperature of the air, the surface to be treated and the lacquer has to be over 18 ºC and the relative humidity of the air below 70 %.
Preparation Wood surfaces should be sanded with sandpaper P150–240. Primer surfaces should be sanded with sandpaper P240–600. All sanding dust must be removed before lacquering.
Priming Merit Sanding and Merit Topas 25.
Mixing of components Stir the lacquer carefully before use. Add 10 volume % of Hardener 006 2098. Thin the lacquer to the viscosity required with Thinner 1035 or 1058. Thinning is not need in curtain coating.

Do not use iron containers as mixing container. Instead use plastic, enamel or acid resistant steel containers.
In case the lacquer mixture is used on the next day, add at least an equal amount of fresh lacquer mixture.
Cleaning of tools Thinner 1035 or 1058.
EU VOC 2004/42/EC-limit value The Volatile Organic Compounds amount is 550 g/litre of paint.
Maximum VOC content in ready to use paint (thinned 20 % by volume) is 590 g/l.

according to Regulation (EC) No. 1272/2008
Containers are provided with safety labels, which should be observed. Further information about hazardous influences and protection are detailed in individual health and safety data sheets. A health and safety data sheet is available on request from Tikkurila Oyj. For industrial use only.
Safety data sheetMerit Topas 25
Thinner safety data sheetMerit Topas 25
Hardener safety data sheetMerit Topas 25


Counter for wood finishes

Tikkurila offers wide range of paint and lacquer systems for different wood industries. Tikkurila cost comparison program calculates costs and helps to find the best solution for your project.

VOC counter for wood finishes

Tikkurila VOC calculation program is based on VOC Directive 1999/13/EC valid in the whole EC area, which is aimed to reduce VOC emissions in different industrial activities. The calculation program is meant to be used as a preliminary mapping of solvent emissions.