OEM Thermoplan Milk System Cleaning Tablets — Part # 135.283 (also sold as 131.865 and 120.528) — are factory-approved tablets designed to clean the milk system on Thermoplan Black&White 4 and Black&White 4c (Compact) super automatic espresso machines.
 
These tablets are the current OEM replacement for legacy Thermo Milk Tabs #120.900 and are formulated specifically for Thermoplan’s automatic milk system cleaning programs, ensuring proper hygiene, safe operation, and protection of internal milk components.
 
Compatible Thermoplan Machines
Thermoplan Black&White 3 B&W3
Thermoplan Black&White 4 B&W4
Thermoplan Black&White 4c (Compact) B&W4c
Black&White 4 CTM (one-step milk systems)
(Milk system cleaning tablets are required for all one-step Black&White 4 machines with automatic milk systems.)
 
What the Milk System Cleaning Tablets Do
Thermoplan milk system cleaning tablets are used to clean milk lines, milk circuits, and milk dispensing components, removing:
Milk residue
Protein buildup
Fat deposits
Bacteria-causing residue
These tablets are designed only for use during automatic milk system cleaning cycles and should not be used for coffee system cleaning.
 
Tablet Specifications
Tablet type: Milk system cleaning
Tablet color: White
Use: Automatic milk system cleaning programs only
 
Cleaning Frequency (Typical Use)
Milk system cleaning is typically performed every 24 hours, or when prompted by the machine.
Always follow on-screen instructions and manufacturer-recommended cleaning procedures.
 
Why Use OEM Thermoplan Milk Cleaning Tablets
Thermoplan requires the use of OEM, factory-approved milk system cleaning tablets to:
Ensure proper execution of automatic milk cleaning cycles
Prevent milk residue buildup inside internal components
Protect seals, valves, and milk lines
Maintain warranty compliance on Black&White 4 machines
Using non-approved tablets may result in improper cleaning, hygiene issues, or machine damage.
 
Thermoplan Milk System Cleaning Tablets
62-count tablets
OEM Milk Tabs – Part # 135.283 (also sold as 131.865 and 120.528)
(Replacement for 120.900 Thermo Milk Tabs)
 
FAQ
Are these the replacement for Thermo Milk Tabs 120.900?
Yes. Thermoplan Milk System Cleaning Tablets Part # 135.283 (also sold as 131.865 and 120.528) are the current OEM-approved milk system cleaning tablets for Thermoplan Black&White machines.
 
What are Thermoplan milk system cleaning tablets used for?
Milk system cleaning tablets are used to clean milk lines and milk dispensing components during automatic milk system cleaning cycles on Thermoplan Black&White 4 machines.
 
Do I need milk cleaning tablets for my Black&White 4 CTS?
Milk system cleaning tablets are required for one-step Black&White 4 machines with automatic milk systems, such as CTM models. Machines with a manual steam wand do not require milk system cleaning tablets.
 
How often should I run milk system cleaning?
Milk system cleaning is typically required every 24 hours, or whenever prompted by the machine. Follow on-screen instructions for proper cleaning intervals.
 
Can I use coffee cleaning tablets for milk system cleaning?
No. Coffee system cleaning tablets and milk system cleaning tablets are not interchangeable. Always use the correct tablet for each cleaning cycle.
 
Will these work with the Black&White 4 Compact (4c)?
Yes. These milk system cleaning tablets are fully compatible with Black&White 4 and Black&White 4c (Compact) models that include an automatic milk system.
 
Can I use third-party milk cleaning tablets?
No. Thermoplan requires the use of authorized, OEM cleaning tablets to ensure proper cleaning, protect internal components, and maintain warranty compliance.
 
Why are there multiple part numbers for the same milk cleaning tablets?
These part numbers refer to the same Thermoplan milk system cleaning tablets and are interchangeable depending on Thermoplan ordering system, distributor, or documentation. 
Alternate part numbers you may see: 135.283 • 131.865 • 120.528 / 120528 • 120.900

Which key do I use for milk system cleaning?
Thermoplan milk system cleaning tablets are installed using the blue cleaning key during the machine’s automatic milk system cleaning cycle.
 
Always follow the on-screen instructions provided by the machine and Thermoplan’s manufacturer-recommended cleaning procedures.
 
Need coffee system cleaning tablets as well?
View our complete Thermoplan Cleaning Tablets Monthly Supply for Black&White 4 machines.
 
Subscription available on this product. In stock in the U.S. and ready to ship.