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FLIP Chemical

DLG-APPROVED „Resistance to ammonia“

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The approval

A test mark “DLG-APPROVED for individual criteria” is awarded for agricultural products which have successfully fulfilled a scope-reduced usability testing conducted by DLG according to independent and recognized evaluation criteria. The test is intended to highlight particular innovations and key criteria of 
the test object. The test may contain criteria from the DLG test scope for overall tests, or focus on other value-determining characteristics and properties of the test subject. The minimum requirements, test conditions and procedures as well as the evaluation bases of the test results will be specified in consultation with an expert group of DLG. They correspond to the recognized rules of technology, as well as scientific and agricultural knowledge and requirements. The successful testing is concluded with the publication of a test report, as well as the awarding of the test mark which is valid for 
five years from the date of awarding.

The ammonia resistance test was performed as a laboratory test according to the patented DLG test standard. This test is intended to determine the suitability of equipment for animal living areas to withstand the impact of animal environments.

Other critera have not been assessed.

Assessment – Brief Summary

The LED Light “FLIP Chemical” from Ensto Building Systems has successfully completed the DLG test for ammonia resistance. According to this result, it can be assumed that these luminaires are resistant to the ­typical environmental conditions of animal living areas and that no accelerated reduction of the product lifetime will occur. In addition, LED Light “FLIP Chemical” was operated actively in the chamber for the entirety of the test. No product damage was observed here.

Table 1: Assessment in brief

Ammonia resistance
Preservation of the luminous flux

* The DLG test framework provides the following options in its evaluation schemes:
■ ■ ■ or better = meets, exceeds or  clearly exceeds the specified DLG standard,  ■ ■ = meets the legal re­quire­ments for marketability,  = failed

The Product

Description and technical data

The LED Light “FLIP Chemical” is suitable for use in animal living areas and in agricultural farm buildings.

Table 2: Technical data (according to manufacturer)

 FL121RO...CH FL151...CH
Electrical connection   
Voltage 220-240 V AC 
Frequency 50/60 Hz 
Rated input power21 … 42 W 26 … 52 W
Dimension and weight   
Length1,253 mm 1,533 mm
Height x width 76 mm x 86 mm 
Weight2.2 kg 2.6 kg
Additional technical data   
Number of LED modules 1 
Material Housing: PC, End parts: ABS 
Protection rating IP66 
Colour temperature (CCT) 3,000 K / 4,000 K / 5,000 K 
Rated luminous flux3,170 … 6,010 lm 3,960 … 7,520 lm
Luminous efficacy143 … 151 lm/w 145 … 152 lm/W
Color rendering index (CRI) > 80 
Ambient temperature -40 ºC …  +35 ºC 
Impact resistance IK08 
Rated service life L80 > 100,000 hrs 
dimmable on/off or DALI 


The Method

Resistance to ammonia

The ammonia resistance of the LED light “FLIP Chemical” was determined by a laboratory test with one luminaire according to the patented DLG test standard for agricultural use. The laboratory test is designed to replicate the conditions of a usage period of about 10 years exposure to animal living areas. 

The test was carried out in a climate chamber under the following climate conditions:

Test duration1500 h
Air temperature70 °C
Relative humidity70 %
Ammonia concentration750 ppm

For assessing the ammonia resistance, each luminaire was examined visually, gravimetrically and the plastic parts additionally through measurement of the hardness (Shore D) before and after the climate testing.

The luminaires have additionally been following a cycle of operation predefined by DLG (3 hours on, 1 hour off) in order to evaluate any thermal impacts caused by switch-on and -off procedures during ammonia fumigation. Furthermore the luminous flux was measured according to DIN EN 13032 before and after the fumigation in order to get additional information regarding the aging process.

In order to avoid overheating (> 70 °C), the luminaires could be operated at a reduced power level during the testing period.

For the approval of all luminaires in table 2, the LED Light “FLIP Chemical” in the length of 1,533 mm and at an input power of 52 W was tested. After the tests, the luminaires underwent visual examination to a reference sample that was identical in construction.

The Test Results in Detail

Resistance to ammonia

Visual test
The comparative visual examination after the ammonia exposure has shown minor discolorations outside the luminaire housing, but no negative impact on the luminaire performance needs to be expected. 

During the test, the luminaire appeared to be sufficiently gas-tight. Nevertheless it cannot be ruled out, that a limited amount of ammonia respectively ammonium compounds could enter the luminaire housing. 

This has not been veryfied. Again, no negative impact on the luminaire performance needs to be expected. 

The defects are rated as insignificant. The examination of the manufacturer’s mounting parts didn’t also show any defects.

Gravimetric test
Weight comparisions before and after the ammonia fumigation have not shown any measurable increases or decreases in weight. All determined changes were within the measurement incertainity.

Hardness test
During the hardness test (Shore D) no measurable changes were observed. All determined changes were within the measurement incertainty. 

Functional test
During the hardness test (Shore D) no measurable changes were observed. All determined changes were within the measurement incertainty. 

Preservation of the luminous flux
After completion of the test the luminaire still had a luminous flux of 88,5 %.

Based on the results of these tested parameters, the luminaire is evaluated as resistant to ammonia. 


The results show that the LED Light “FLIP Chemical” fulfills the testing requirements for ammonia resistance and thus receives the test mark DLG-Approved. It can be expected that the luminaire is resistant to ammonical air in animal living areas and that no accelerated reduction of the product lifetime occurs.
The LED Light “FLIP Chemical” was operated both passively and actively during the ammonia fumigation in the test chamber and passed both tests successfully.

Applicant and Test implementation

Manufacturer and Applicant

Ensto Building Systems Finland Oy, A brand of Legrand
Ensio Miettisen katu 2
P.O. Box 77
06101 Porvoo
VAT No. FI31150829

Phone +358 (0)204 76 21 

Testing agency

DLG TestService GmbH, Gross-Umstadt location, Germany

The tests are conducted on behalf of DLG e.V.

DLG test scope
DLG-approved single criteria test 
“Leuchtsysteme in Ställen“ (current as of 03/2021)


Division head
Dr. Ulrich Rubenschuh

Test engineer(s)
Dipl-Ing (FH) Tommy Pfeifer *

Photometric laboratory
Photometrik GmbH, Einsteinstraße 24
64859 Eppertshausen, Germany

* Author


DLG TestService GmbH - Groß-Umstadt location • Max-Eyth-Weg 1 64823 Groß-Umstadt Germany • Tel.: +49(0)69 24 788-611 •