Roller and blanket washes
Remove ink from rollers and blankets. Compare conventional and UV formulations and compatibility with NBR, NBR/PVC and EPDM.
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VARN chemicals for sheetfed offset
VARN chemical products help maintain proper dampening, cleanliness, and operating conditions for sheet-fed offset printing presses. Select a product category for your specific process, then compare the various applications and limitations. Our team (WIT) can assist you in choosing the right product based on your ink, water, and the materials used for your rollers and blankets.
You will also find VARN anti-set-off powders here, as well as Russell-Webb. Both brands offer powders that prevent ink from transferring (setting off) between sheets in a stack.
Are you looking for chemical products from other brands? Check out general offer of WIT printing chemicals.
Which VARN chemicals do you need?
Start with the task you want to do. Then compare the products in the selected group.
| Your task | Select a group | Most important limitation |
|---|---|---|
| Wash the ink off the rollers and blankets | VARN washes | Select the preparation for the ink and elastomer. UV agent does not have to be suitable for all types of rubber. |
| Stabilize dampening during printing | VARN buffers | Include water, dampening system and IPA contribution. Do not select buffer based solely on pH. |
| Remove glaze, calcium or deposits | Cleaning and maintenance | An ordinary wash does not replace an agent for a specific sediment. Chemicals will not repair worn rollers. |
| Prepare water or reduce foam | Auxiliary chemicals | Select the add-on to the cause of the problem. Do not correct several parameters at the same time. |
| Reduce ink set-off in the stack | VARN and Russell-Webb powders | Select the grain and quantity to work with. Powder will not replace proper drying. |
| Develop the plate or clean the plate processor | CtP Chemistry | Developer, processor bath cleaner and care products for finished plates have different purposes. |
Select VARN chemicals for your assignment
Fountain solution concentrates
Select a concentrate for water, ink and dampening system. Check out variants for IPA reduction and calcium control.
Cleaning and maintenance
Remove deposits, clean the rubber and take care of the plates and dampening circuit. Choose a product for a specific surface.
Auxiliary chemicals
Prepare water, reduce foam or select the agent for inactive units. Check the application's purpose and limitations.
VARN and Russell-Webb powders
Reduce ink set-off in the stack. Select powder for the paper, ink coverage and planned finishing.
CtP chemistry and processors
Select the chemicals for the plate and device. Separate developing, bath cleaning and plate surface care.
How to choose a product for the machine?
Provide the machine model, type of ink and place of application. For washes, specify the rubber of the rollers and blankets. For buffers, provide water parameters and the current share of IPA.
Not every UV product is compatible with every elastomer. Consult the specific product data sheet and your press manufacturer’s manual. Products designed for calcium removal, ink management, plate maintenance, and fountain solution systems serve different purposes.
You can download technical data sheets (in English, as PDFs) from the individual product pages. Do you need a safety data sheet (SDS) or information about a different product variant? Please contact us. Do not substitute products based solely on a similar name.
VARN and Russell-Webb anti-set-off powders
The powder separates the sheets in the stack and helps reduce the set-off of fresh ink. Does not replace proper drying of ink. Select the type and grain size for paper, ink coverage and further processing.
| Brand and type | Application | What to include |
|---|---|---|
| VARN Coated | Coated powder; the coating affects the moisture resistance and slippage of the sheets. | Check compatibility with the planned varnishing, gluing and laminating. |
| VARN Uncoated / Regular | Uncoated powder, to be considered for printing and further finishing. | Select the grain size and quantity according to the substrate and powdering device. |
| Russell-Webb - coated and uncoated powders | Separate brand of anti-set-off powders in the Flint Group catalog. | Confirm the specific variant, grain size and compatibility with the processing of the finished print. |
When asking, please provide the paper weight and type, sheet format and planned finishing. Don't choose grain size based solely on grammage. Ask about the powder and the current technical data sheet.
VARN chemicals for CtP plates and processors
Check the plate type and plate processor requirements first. A processless plate does not require conventional developer simply because you use CtP.
| Product | When to choose | What to check | Card |
|---|---|---|---|
| VARN HyperGold | Developer and regenerator for indicated thermal positive plates and conventional plates. | Confirm compatibility with current board and device. The name CtP does not cover a single technology. | PDF ENG |
| VARN CtP Plate Processor Bath Cleaner | Cleaning baths of thermal, photopolymer and conventional PS plate developers. | Do not use silver plates in processors. Check the device and rinsing instructions. | PDF ENG |
Are you looking for a milk for the surface of the finished board? You will find CtP Plate Cleaner in the group VARN cleaning and care. This is a different use than cleaning the plate processor bath.
What influences the price and choice of chemicals?
We set the price for a specific preparation, packaging and quantity. When comparing, take into account the working concentration, cleaning method and compatibility with the machine's materials. A cheaper product will not help if it does not fit the rubber or installation.
Select a product and ask for a price
Specify the product or problem, machine model and materials used. WIT will confirm the correct variant, packaging, availability and pricing. We set the price for a specific product and quantity.