Scalable Lab Milling System

5 milling solutions in one

Fully transferable results from
small sample R&D tests up to full-scale production.

Benefits of the Scalable Lab System (SLS)

The SLS offers five milling solutions within one machine.  Switch milling heads within seconds, with our Smart-Detect technology for easier R&D testing.

SLS With All Heads

When developing new products it is vital that results achieved in the lab can be transferred to production.  The SLS gives the assurance that PSDs achieved at lab-scale can be duplicated in production equipment with minimal variance in particle size distributions. 


The SLS encompases the key size reduction and material processing technologies of hammer milling, conical milling and screening in a single platform with interchangeable heads.  Designed to be space and cost efficient and fully scalable to production volumes.

Hammer Mill

High impact Hammer Mill capabilities creating finer particle sizes. Fully scalable to the D6a.


Conical Milling

Tight particle granulometry with a wide range of scalable screens/impellers. Low heat generation, fines, dust and overs.


High Energy Milling

Primarily for APIs, fine chemical and cosmetic applications. Predictable narrow PSDs with 30-70% more on-target.


Security Screening

In-line security screener with a high capacity.


Supported Industries

Our hammer mills are extensively used in the following applications:


Success at all of the processing stages depends upon well conditioned powders.



High product quality is
dependent upon creating the
ideal powder.



Particle size optimization can improve product consistency, flavor and texture.



Even the most abrasive and corrosive materials can be processed successfully.


SLS Fitz Mill
Hammer Mill


High impact hammer mill for achieving finer particle sizes.

Two configurations of blade offer more control.

Adaptable to specific material characteristics.

Handle samples as small as 5g without loss of yield or screen residue.

SLS Bulletin SLS Brochure SLS Product Overview
SLS FitzMill L1A Head
Features at a glance
CAPACITIES 5 g to 50+ kg/hr
PSD d50 20-300  µm
PSD d90 60-2000  µm


2 blade configurations - impact & cutting.
Metered feed control design scalable to production.

SLS Comil
Conical Milling


Tight particle granulometry for consistent repeatable results.

Low levels of heat, fines, dust and overs improving product quality.

Fully scalable results to the Quadro Comil Range.

SLS Bulletin SLS Brochure SLS Product Overview
SLS Comil U5 Head
Features at a glance
CAPACITIES 50 g to 150+ kg/hr
PSD d50 150-300  µm
PSD d90 300-2000  µm
In-line spacerless design.
Wide range of screens & impeller choices.

SLS High Energy
Conical Milling


Narrow PSDs with more on-target for high quality outputs.

Predictable, repeatable results scalable to the Quadro range.

SLS Bulletin SLS Brochure SLS Product Overview
SLS Comil H5 High Energy Head
Features at a glance
CAPACITIES <1 kg to 100 kg/hr
PSD d50 20-150  µm
PSD d90 60-300  µm


Integrated feed system for increased containment.

SLS FlexSift
Security Screening


Inline security screening that is fully scalable to production models.


SLS Bulletin SLS Brochure SLS Product Overview
SLS FlexSift S5 Head
Features at a glance
CAPACITIES <125-2500+ kg/hr
MESH SIZE min 150 µm (100 mesh)
MESH SIZE max 6.4 mm (0.25")
High capacity - typically 500 kg/hr.
Standard de-agglomeration      spoiler arm.

Sack Tip
(Single Filling Module)

Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh.

Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.

Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu.

Features at a glance

Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy. nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.

Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.

In detail

Scalable Lab System™ (SLS)

Here are just some of the elements of the SLS we have designed and built:

As well as meeting the requirements of cGMP, we want to ensure that the machines we develop are well designed and safe for the user, so we follow a variety of specific industry directives.

All Fitzpatrick products are designed and manufactured in a facility with an ISO 9001:2015 accredited Quality Management System. 

The scope of this Quality Management System applies to all processes and activities which are controlled, managed and performed by employees within the Fitzpatrick company. 

The current Certificate of Registration, reference Certificate No: CERT-0123529, has been issued by SAI Global and is effective to September 3, 2021.


We offer a complete selection of ATEX-approved mills that meet the ATEX European Union directive for products used in potentially explosive atmospheres.

Our equipment is designed to handle the toughest milling applications, which is why professionals around the world choose us.   With models specifically designed to meet ATEX Zone 0/20 (1GD) or 1/21 (2GD) requirements, we provide the most comprehensively safe mills in the industry.

                         accred-atex-web   accred-ce_white-web

All equipment destined for Europe is CE marked and comes with an EU Declaration of Conformity.  It is certified to comply with the Machinery Directive 2006/42/EC,  the Low Voltage Directive 2014/35/EU and the Electromagnetic Compatibility Directive 2014/30/EU.

Our equipment is designed to meet a variety of international safety standards, so whichever country you are in we can be compliant.

Discover why the Scalable Lab System (SLS) from Fitzpatrick is world-leading and has become the equipment of choice for many pharmaceutical companies around the world.

Quadro SLS


The Scalable Lab System™ (SLS) offers five milling solutions from just one platform.  All results are fully scalable and transferable to production systems.


We offer solutions that provide reliable and repeatable results in the following areas:

Roller Compaction

Fitzpatrick specializes in designing world-class
Roll Compactors.