Ring test participations

As an accreditated laboratory Sofia GmbH regularly takes part on several ring tests. On request our clients are offered the results. The ring tests organized by FAPAS in 2005 show two remarkable trends:

  • the number of laboratories offering pesticides residue analyses rapidly increases
  • the proportion of laboratories with a high quality standard for pesticide residue analyses rapidly decreases.
     

FAPAS
series number

9

19

 

19

round

37

44

939

42

date

Nov. 04 - Febr. 05

Jan.-Feb. 05

Apr. - June 05

Nov. 04 - Jan. 05

material

crude corn oil

tea

hydrogenated vegetable oil

apple purée

pesticides

organophosphates

organophosphates
and pryrethroides

organochlorines

general screening

successfull
(all compounds found and quantified with Z-scores <=2)

28

11

4

8

SOFIA (successful)

1

1

1

1

only partially successfull
(all compounds found but one or more quantified with |Z-scores| > 2)

10

6

7

5

not successfull
(not all compounds found or analysed)

5

10

21

92

In order to give our client the possibility to compare quality criteria SOFIA intends to publish
its ring test results.

Additionally we will inform you about the development concerning this subject.

 

Ring test results of Sofia GmbH (2005)

organizer

ring test identification

time range

laboratory number of SOFIA

matrix

determined compounds

Z-scores

comment

FAPAS

series 19 round 44

jan. - febr. 2005

18

tea

diazinon

-0,4

successfull

 

pesticide residues

 

 

 

malathion

-0,3

successfull

 

 

 

 

 

permethrin

-0,5

successfull

 

FAPAS

test 0939

april - june 2005

12

hydrogenated vegatable oil

dimethoate

-1

successfull

 

pesticide residues

 

 

 

ethion

0,2

successfull

 

 

 

 

 

parathion-methyl

-0,4

successfull

 

 

 

 

 

permethrin

-1,1

successfull

 

 

 

 

 

vinclozolin

0,7

successfull

 

FAPAS

series 9 round 37

nov. 2004 - febr. 2005

18

crude corn oil

chlorpyriphos

-1,3

successfull

 

pesticide residues

 

 

 

fenitrothion

-1,5

successfull

 

 

 

 

 

malathion

-1,2

successfull

 

FAPAS

series 19 round 42

Nov. 2004 - jan. 2005

68

apple purée

chlorfenvinphos

-0,2

successfull

 

pesticide residues

 

 

 

chlorpyrifos

1,6

successfull

 

 

 

 

 

methamidophos

0

successfull

 

 

 

 

 

monocrotophos

1

successfull

 

 

 

 

 

omethoate

0

successfull

 

 

 

 

 

trifluralin

0,8

successfull

 

FAPAS

series 19 round 45

febr. - apr. 2005

7

pear purée

chlormequat

-1,2

successfull

 

pesticide residues

 

 

 

 

 

 

 

FAPAS

series 30 round 10

nov. 2004 - jan. 2005

2

breakfast cereals

acrylamid

-1,2

successfull

 

acrylamide

 

 

 

 

 

 

 

FAPAS

series 2 round 62

march - april 2005

39

pig muscle material

sulfadimethoxine

0,9

successfull

 

veterinary drugs

 

 

 

 

 

 

 

FAPAS

series 14 round 42

march 2005

36

oils and fats

peroxide value

-0,3

successfull

 

indicators

 

 

 

acidity

-0,7

successfull

 

 

 

 

 

K232

1,3

successfull

 

 

 

 

 

K270

1,5

successfull

 

FAPAS

test 2220

may-july 2005

27

fumonisins B1 and B2

FB1

1,1

successfull

 

 

 

 

 

FB2

-0,6

successfull

Z-score describes the distance between the laboratory result and the assigned value considering the variance of the method.

A Z-score of 0 means that the assigned value is fitted, values >2 or <-2 indicate results outside the acceptable range.

 

 

Ring test results of Sofia GmbH (2006)

organizer

ring test identi-fication

time range

laboratory number of SOFIA

matrix

determined compounds

Z-scores

comment

Landesum-
weltamt NRW

pesticide residues

june

9

ground
water

Atrazin

2,4

un-
successfull

 

 

 

 

 

Bromacil

1,6

successfull

 

 

 

 

 

Chloridazon

1,5

successfull

 

 

 

 

 

Chlortoluron

0,2

successfull

 

 

 

 

 

Desethyl-
atrazin

1,3

successfull

 

 

 

 

 

Diuoron

0,3

successfull

 

 

 

 

 

Isoproturon

0,7

successfull

 

 

 

 

 

Metamitron

-0,7

successfull

 

 

 

 

 

Metazachlor

0,7

successfull

 

 

 

 

 

Simazin

1,3

successfull

 

 

 

 

 

Tertbutylazin

-0,9

successfull

 

Lach & Bruns

pesticide residues

aug - sep

11

peach purée

Bitertanol

-0,7

successfull

QS-info

 

 

 

 

Fenhexamid

-0,2

successfull

 

 

 

 

 

Phosmet

0,7

successfull

 

 

 

 

 

Propargite

-2,5

-

 

 

 

 

 

Tebucon-azole

-1,1

successfull

 

 

 

 

 

Piperonyl-butoxide

0,1

successfull

 

Unilever / ETC

pesticides

april - may

5

tea

Chlor-fenapyr

-3,3 / -3,1

un-successfull

 

 

 

 

 

Dicofol

(4,5 / 3,5)

ring test data cannot be evaluated

 

 

 

 

 

Bifenthrin

-0,7

successfull

 

 

 

 

 

Cyper-methrin

-0,4

successfull

 

 

 

 

 

Fenpro-pathrin

-0,8

successfull

 

 

 

 

 

Fenvalerate

-1,7

successfull

 

 

 

 

 

Chlorpyrifos

-0,5

successfull

 

 

 

 

 

Prothiofos

-1,6

successfull

 

 

 

 

 

Buprofezin

-0,9

successfull

 

 

 

 

 

Halfenprox

-1,8

successfull

 

 

 

 

 

Pirimiphos-methyl

0,9

successfull

 

 

 

 

 

Pyridaben

-1,9

successfull

 

metals

april - may

5

tea

Cd

0,3

successfull

 

 

 

 

 

Cu

-1,1

successfull

 

 

 

 

 

Pb

-1,2

successfull

 

 

 

 

 

Zn

-1,3

successfull

  

LVU

133-17a-2006

may - june 2006

37

strawberry purée

Acrinathrin

-1

successfull

 

pesticide residues

 

 

 

Azoxystrobin

0,5

successfull

 

 

 

 

 

Clofentezin

0

successfull

 

 

 

 

 

Cyprodinil

-0,4

successfull

 

 

 

 

 

Fludioxonil

-0,4

successfull

 

 

 

 

 

Kresoim-methyl

0,6

successfull

 

 

 

 

 

Tebufenozid

-0,4

successfull

 

FAPAS

Test 0271

feb - march 2006

21

Honey

Tylosin

0,4

successfull

 

antibiotic

 

 

 

 

 

 

 

LVU

133-1a-2006

feb. - march 2006

12

boiled sausage

Pb

1,9

successfull

 

metals

 

 

 

Cd

-0,1

successfull

 

IFA

HD57

feb - march 2006

16

drinking water

Bromacil

1,1 / 1,58

successfull

 

Herbicide in water

 

 

 

Isoproturon

0,86 / 0,75

successfull

 

 

 

 

 

Diuron

0,19

successfull

 

 

 

 

 

Linuron

0,34 / -0,08

successfull

 

 

 

 

 

Chlorbromuron

0,39 / -0,09

successfull

 

Ring test results of Sofia GmbH - 2007

organizer

ring test identi-fication

time range

laboratory number of SOFIA

matrix

determined compounds

Z-scores

comment

FAPAS

Test 1966

jan. -   march 2007

32

peach purée

azinphos-methyl

0,2

successfull

 QS-info

pesticide residues

 

 

 

chlorpyrifos

0,1

successfull

 

 

 

 

 

gamma-HCH

0,3

successfull

 

 

 

 

 

quinalphos

-0,2

successfull

 

 

 

 

 

 

 

 

BAM

OCA065

jan. 2007

LC0026

ground- water

Dichlor-methan

0,25 / -2,25

successfull

 QS-info

LHKW  BTEX

 

 

 

Trichlor-methan

-1,25 / -2,45

un-successfull

 

 

 

 

 

Tetrachlor-methan

10 / 12

un-successfull

 

 

 

 

 

1,2-Dichlor-ethan

-0,1 / -1,3

successfull

 

 

 

 

 

cis-1,2-Dichlor-ethen

-5,49 / -5,95

un-successfull

 

 

 

 

 

Vinylchlorid

0,04

successfull

 

 

 

 

 

1,1,1-Tri-chlorethan

0,77 / -1,65

successfull

 

 

 

 

 

Trichlor-ethen

-0,18 / -0,31 / -1,65

successfull

 

 

 

 

 

Tetrachlor-ethen

0,12 / -0,93

successfull

 

 

 

 

 

Benzol

-0,16

successfull

 

 

 

 

 

Toluol

-1,62

successfull

 

 

 

 

 

Ethylbenzol

-0,29

successfull

 

 

 

 

 

m/p-Xylol

-0,51 / -1,40

successfull

 

 

 

 

 

o-Xylol

-0,51 / -0,50

successfull

 

 

 

 

 

 

 

 

IFA

HA61

febr. - march 2007

K

drinking water

DIAtrazin

0,90 / 1,80

successfull

 QS-info

Herbicide in water

 

 

 

2,6-Dichlor-benzamid

2,31

un-successfull

 

 

 

 

 

DEAtrazin

0,7

successfull

 

 

 

 

 

Hexazion

0,52 / 0,54

successfull

 

 

 

 

 

Simazin

1,81 / 1,68

successfull

 

 

 

 

 

Cyanazin

0,34 / 0,12

successfull

 

 

 

 

 

Atrazin

0,25

successfull

 

 

 

 

 

Metaza-chlor

0,30 / 0,29

successfull

 

 

 

 

 

Sebuthyl-azin

0,78 / 0,51

successfull

 

 

 

 

 

Propazin

0,12 / 0,08

successfull

 

 

 

 

 

Tertbuthyl-azin

-0,09

successfull

 

 

 

 

 

Promertryn

0,31 / 0,19

successfull

 

 

 

 

 

Terbutryn

0,50 / 0,68

successfull

 

 

 

 

 

Metolachlor

0,4

successfull

 

 

 

 

 

 

 

 

AQS

TW O4 - PBSM 2  

febr. - march 2007

96

drinking water

2,4 - D

0,2/0,8/0,3

successfull

 QS-info

Phenoxy-alkylacids

 

 

 

Mecoprop

-0,2/0,1/0,4

successfull

 

 

 

 

 

2,4 - DP

-0,2/-0,1/0,4

successfull

 

 

 

 

 

MCPA

0,2/0,6/0,5

successfull

 

 

 

 

 

MCPB

-0,1/0,0/0,2

successfull

 

 

 

 

 

2,4,5 - T

0,3/0,3/0,4

successfull

 

 

 

 

 

Bentazon

-0,5/-0,2/-0,4

successfull

 

 

 

 

 

Bromoxynil

-0,6/-0,5/-0,2

successfull

 

 

 

 

 

2,4 - DB

-0,6/-0,5/-0,1

successfull

 

 

 

 

 

Fenoprop

0,5/0,3/0,5

successfull

 

 

 

 

 

 

 

 

FAPAS

Test 0499

jan. - march 2007

35

spice - paprika

AFB1

0,0

successfull

 QS-info

Aflatoxins

 

 

 

AFB2

1,7

successfull

 

 

 

 

 

AFG1

0,5

successfull

 

 

 

 

 

AFG2

-

successfull

 

 

 

 

 

total AF

0,5

successfull

 

 

 

 

 

 

 

 

FAPAS

Test 1627

feb. - march 2007

5

apple juice

PAT

1,1

successfull

 QS-info

Patulin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAPAS

Test 1756

feb. - march 2007

82

cereal (wheat)

OTA

-0,6

successfull

 QS-info

Ochratoxin A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAPAS

Test 0285

feb. - march 2007

67

bovine milk

chlor-amphenicol

-0,6

successfull

 QS-info

Chloramphenicol

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAPAS

Test 3016

feb. - march 2007

4

breakfast cereal

acrylamide

-0,4

successfull

 QS-info

Acrylamide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IFA

HD62

april - may 2007

Q

drinking water

bromacil

0,04 / 0,22

successfull

 QS-info

Herbicide in water

 

 

 

chlortoluron

 

successfull

 

 

 

 

 

monolinuron

 

successfull

 

 

 

 

 

isoproturon

-0,29

successfull

 

 

 

 

 

diuron

0,62 / -0,12

successfull

 

 

 

 

 

linuron

0,24 / 0,05

successfull

 

 

 

 

 

chlorbromuron

-1,28

successfull

 

 

 

 

 

 

 

 

DGF

"Phthalate in Speiseölen"

dez. 2006 - feb. 2007

6

edible oil

di-methyl-phthalate

see QS-info

 QS-info

Phthalate in edible oil

 

 

 

di-ethyl-phthalate

see QS-info

 

 

 

 

 

bis(2-ethylhexyl)-phthalate

see QS-info

 

 

 

 

 

di-cyclohexyl-phthalate

see QS-info

 

 

 

 

 

dibutyl- + diisobutyl-phthalate

see QS-info

 

 

 

 

 

dinonyl- + diisononyl-phthalate

see QS-info

 

 

 

 

 

di-allyl-phthalate

see QS-info

 

 

 

 

 

 

 

 

FAPAS

Test 0289

april - may 2007

37

chicken muscle

enro-floxacin

-0,5

successfull

 QS-info

Quinolones & Fluoro-quinolones

 

 

 

sara-floxacin

-0,9

successfull

 

 

 

 

 

 

 

 

FAPAS

Test 0554

june -   aug. 2007

20

hydrogenated vegetable oil

trans-heptachlor epoxide

-0,4

successfull

  QS-info

pesticide residues

 

 

 

alpha-endosulfan

-0,7

successfull

 

 

 

 

 

beta-endosulfan

1,4

successfull

 

 

 

 

 

pp-DDE

1,5

successfull

 

 

 

 

 

PCB 153

-0,4

successfull

 

 

 

 

 

 

 

 

Lach&Bruns

3rd

sept. 2007

55

vegetable purée (Salad)

boscalid

2,1

un-successfull

 QS-info

pesticide residues

 

 

 

dicloran

-0,3

successfull

 

 

 

 

 

fludioxinil

1,3

successfull

 

 

 

 

 

methomyl

1,9

successfull

 

 

 

 

 

pendi-methalin

-1,4

successfull

 

 

 

 

 

pyri-methanil

-0,8

successfull

 

 

 

 

 

thia-methoxam

0,1

successfull

 

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