All proficiency tests

On this page you will all proficiency tests of AQS Baden-Württemberg since 2020

The AQS Baden-Württemberg at the Institute fro Sanitary Engineering, Water Quality and Solid Waste Management at the University of Stuttgart provides proficiency tests primarily in the field of water analysis.

Further information on proficiency tests

List of proficiency tests of AQS Baden-Württemberg

The following list shows the proficiency tests of the AQS-BW in reverse chronological order:

PT No.DescriptionStatus
PT 11/25
TW O1		PT 11/25 - TW O1 - pesticides 1 in drinking water
Dates:
Announcement:8/11/25
Registration deadline:9/5/25
Shipment:11/24/25
Entry deadline:12/15/25
Scheduling
PT 10/25
PT 10/25 - sum parameters I
Parameters:
  • adsorbable organic halogens
  • chemical oxygen demand
  • total organic carbon
  • total bound nitrogen

Dates:
Announcement:7/25/25
Registration deadline:8/15/25
Shipment:11/3/25
Entry deadline:11/24/25
Scheduling
PT 9/25
TW A1		PT 9/25 - TW A1 - anions in drinking water
Parameters:
  • bromate
  • chlorite
  • chlorate
  • chloride
  • fluoride
  • nitrate
  • nitrite
  • sulfate
  • total phosphorous

Dates:
Announcement:7/1/25
Registration deadline:7/25/25
Shipment:9/29/25
Entry deadline:10/20/25
Scheduling
PT 8/25
TW S1		PT 8/25 - TW S1 - sweeteners and benzotriazoles
Parameters:
  • acesulfam
  • cyclamat
  • saccharin
  • sucralose
  • 1H-benzotriazol
  • 4-methyl-1H-benzotriazol
  • 5-methyl-1H-benzotriazol

Dates:
Announcement:6/23/25
Registration deadline:7/11/25
Shipment:9/2/25
Entry deadline:9/22/25
Scheduling
PT 7/25
PT 7/25 - fish egg toxicity in waste water
Dates:
Announcement:4/14/25
Registration deadline:5/9/25
Shipment:7/21/25
Entry deadline:8/11/25
Scheduling
PT 6/25
TW O6		PT 6/25 - TW O6
Parameters:
  • Perfluorobutanoic acid
  • Perfluoropentanoic acid
  • Perfluorohexanoic acid
  • Perfluoroheptanoic acid
  • Perfluorooctanoic acid
  • Perfluorononanoic acid
  • Perfluorodecanoic acid
  • Perfluoroundecanoic acid
  • Perfluorododecanoic acid
  • Perfluorotridecanoic acid
  • 1-Perfluorobutanesulfonic acid
  • Perfluoropentane sulfonic acid
  • Perfluorohexane-1-sulphonic acid
  • Perfluoroheptane sulfonic acid
  • Perfluorooctane sulfonic acid
  • Perfluorononane sulfonic acid
  • Perfluorodecane sulfonic acid
  • Perfluoroundecane sulfonic acid
  • Perfluorododecane sulfonic acid
  • Perfluorotridecane sulfonic acid

Dates:
Announcement:3/10/25
Registration deadline:3/28/25
Shipment:5/26/25
Entry deadline:6/16/25
Scheduling
PT 5/25
TW S7		PT 5/25 - TW S7 - trifluoroacetic acid
Parameters:
  • trifluoroacetic acid

Dates:
Announcement:3/3/25
Registration deadline:3/21/25
Shipment:5/20/25
Entry deadline:6/9/25
Scheduling
PT 4/25
PT 4/25 - total petroleum hydrocarbon index in waste water
Parameters:
  • total petroleum hydrocarbon index

Dates:
Announcement:1/27/25
Registration deadline:2/21/25
Shipment:5/12/25
Entry deadline:6/2/25
Scheduling
PT 3/25
PT 3/25 - sulfide in waste water
Parameters:
  • sulfide

Dates:
Announcement:12/20/24
Registration deadline:1/17/25
Shipment:3/17/25
Entry deadline:3/31/25
Scheduling
PT 2/25
PT 2/25 - elements in waste water
Parameters:
  • aluminium
  • arsenic
  • lead
  • cadmium
  • chromium
  • iron
  • copper
  • nickel
  • mercury
  • zinc

Dates:
Registration deadline:12/19/24
Shipment:2/24/25
Entry deadline:3/17/25
Announcement PT PORTAL
PT 1/25
TW A5		PT 1/25 - TW A5 - other inorganic parameters
Parameters:
  • total organic carbon
  • oxidisability
  • total cyanide
  • ammonium

Dates:
Registration deadline:1/6/25
Shipment:2/3/25
Entry deadline:2/24/25
Announcement PT PORTAL
PT 10/24
PT 10/24 - sum parameters II
Parameters:
  • biochemical oxygen demand
  • phenoles

Dispatched
PT 9/24
TW O4		PT 9/24 TW O4 - acidic pesticides
Parameters:
  • bentazone
  • bromoxynil
  • dichlorprop
  • MCPA
  • MCPB
  • mecoprop
  • 2,4-D
  • quinmerac
  • 2,4,5-T

In evaluation
PT 8/24
TW S5		PT 8/24 - TW S5 - sulfonyl urea herbicides
Parameters:
  • amidosulfuron
  • metsulfuron-methyl
  • rimsulfuron
  • thifensulfuron-methyl
  • nicosulfuron

In evaluation
PT 7/24
PT 7/24 - nutrients and ions
Parameters:
  • ammonium nitrogen
  • nitrate nitrogen
  • nitrite nitrogen
  • total phosphorous
  • cyanide (weak acid dissociable)
  • total cyanide
  • chromium(VI)

In evaluation
PT 6/24
TW A4		PT 6/24 - TW A4 - general parameters
Parameters:
  • Color (SAC436)
  • electr. conductivity
  • pH-value
  • turbidity

In evaluation
PT 5/24
TW S11		PT 5/24 - TW S11 - haloacetic acids
Parameters:
  • monochloroacetic acid
  • dichloroacetic acid
  • trichloroacetic acid
  • monobromoacetic acid
  • dibromoacetic acid

Report
PT 4/24
PT 4/24 - pyrethroides
Parameters:
  • Bifenthrin
  • Chlorpyrifos
  • Chlorpyrifos-methyl
  • Cypermethrin
  • Deltamethrin
  • Fipronil
  • Lambda-Cyhalotrin
  • Permethrin
  • Etofenprox
  • Tefluthrin

Report
PT 3/24
TW O3		PT 3/24 - TW O3 - PAH
Parameters:
  • naphthalene
  • acenaphthene
  • fluorene
  • phenanthrene
  • anthracene
  • fluoranthene
  • pyrene
  • benzo[a]anthracene
  • chrysene
  • benzo[b]fluoranthene
  • benzo[k]fluoranthene
  • benzo[a]pyrene
  • dibenz[ah]anthracene
  • benzo[ghi]perylene
  • indeno[1,2,3-cd]pyrene

In evaluation
PT 2/24
PT 2/24 - VOC/BTXE
Parameters:
  • benzene
  • toluene
  • o-xylene
  • m-xylene
  • ethylbenzene
  • trichloroethene
  • tetrachloroethene
  • 1,1,1-trichloroethane
  • dichloromethane

Report
PT 1/24
TW A3		PT 1/24 - TW A3 - cations
Parameters:
  • boron
  • aluminium
  • calcium
  • iron
  • magnesium
  • manganese
  • sodium
  • potassium
  • silicate

In evaluation
PT 8/23A
TW A2 Hg		PT 8/23A - TW A2 Hg in drinking water
Parameters:
  • mercury

In evaluation
PT 12/23
BOD5 in waste water		PT 12/23 - BOD5 in waste water
Parameters:
  • biochemical oxygen demand

Report
PT 11/23
TW S10		PT 11/23 - TW S10 - epichlorohydrin, acrylamide in drinking water
Parameters:
  • epichlorohydrin
  • acrylamide

Report
PT 10/23
PT 10/23		PT 10/23 - sum parameters I in waste water
Parameters:
  • adsorbable organic halogens
  • chemical oxygen demand
  • total organic carbon
  • total bound nitrogen

Report
PT 8/23
TW A2		PT 8/23 - TW A2 - trace elements in drinking water
Parameters:
  • antimony
  • arsenic
  • lead
  • cadmium
  • chromium
  • copper
  • nickel
  • selenium
  • uranium

In evaluation
PT 7/23
TW S11		PT 7/23 - TW S11 - haloacetic acids
Parameters:
  • monochloroacetic acid
  • dichloroacetic acid
  • trichloroacetic acid
  • monobromoacetic acid
  • dibromoacetic acid

Report
PT 6/23
TW O1		PT 6/23 - TW O1 - pesticides with GC/MS or HPLC/UV
Parameters:
  • atrazine
  • desethylatrazine
  • metribuzin
  • tebuconazole
  • terbuthylazine
  • bromacil
  • DCMU
  • ethofumesate
  • flufenacet
  • hexazinone
  • isoproturon
  • metalaxyl
  • metamitron
  • methabenzthiazuron
  • dichlorobenzamide
  • desethylterbuthylazin
  • metolachlor
  • Bisphenol-A
  • Nonylphenol
  • Octylphenol

Report
PT 5/23
PT 5/23		PT 5/23 - total petroleum hydrocarbon index in waste water
Parameters:
  • total petroleum hydrocarbon index

Report
PT 4/23
TW S2		PT 4/23 - TW S2 - Pharmaceuticals in drinking water
Parameters:
  • sulfamethoxazole
  • sulfadimidine
  • trimethoprime
  • candesartan
  • valsartan
  • gabapentin
  • carbamazepine
  • metoprolol
  • sotalol

Report
PT 3/23
TW A1		PT 3/23 - TW A1 - anions in drinking water
Parameters:
  • chlorite
  • chlorate
  • bromate
  • chloride
  • fluoride
  • nitrate
  • nitrite
  • sulfate
  • total phosphorous

In evaluation
PT 2/23
PT 2/23		PT 2/23 - elements in waste water
Parameters:
  • aluminium
  • arsenic
  • lead
  • cadmium
  • chromium
  • iron
  • copper
  • nickel
  • mercury
  • zinc

In evaluation
PT 10/22
TW 05		PT 10/22 - TW O5 - pesticides with HPLC/MS in drinking water
Parameters:
  • N,N-Dimethylsulfamide
  • methyl-desphenylchloridazon
  • desphenylchloridazon
  • metazachloric acid
  • metazachloric sulfonic acid
  • metolachloric acid
  • metolachloric sulfonic acid
  • glyphosate
  • AMPA

In evaluation
PT 9/22
65. LÜRV		PT 9/22 - Nutrients and ions in waste water
Parameters:
  • ammonium nitrogen
  • nitrate nitrogen
  • nitrite nitrogen
  • total phosphorous
  • chloride
  • sulfate
  • fluoride

In evaluation
PT 7/22
TW S4		PFAS according to EU drinking water directive
Parameters:
  • Perfluorobutanoic acid
  • Perfluoropentanoic acid
  • Perfluorohexanoic acid
  • Perfluoroheptanoic acid
  • Perfluorooctanoic acid
  • Perfluorononanoic acid
  • Perfluorodecanoic acid
  • Perfluoroundecanoic acid
  • Perfluorododecanoic acid
  • Perfluorotridecanoic acid
  • Perfluorotridecane sulfonic acid
  • 1-Perfluorobutanesulfonic acid
  • Perfluoropentane sulfonic acid
  • Perfluorohexane-1-sulphonic acid
  • Perfluoroheptane sulfonic acid
  • Perfluorooctane sulfonic acid
  • Perfluorononane sulfonic acid
  • Perfluorodecane sulfonic acid
  • Perfluoroundecane sulfonic acid
  • Perfluorododecane sulfonic acid

In evaluation
PT 6/22
TW A5		PT 6/22 - TW A5 - other inorganic parameters in drinking water
Parameters:
  • ammonium
  • total cyanide
  • oxidisability
  • total organic carbon

Report
PT 4/22
TW S1		PT 4/22 - TW S1 - sweeteners and benzotriazoles in drinking water
Parameters:
  • acesulfam
  • cyclamat
  • saccharin
  • sucralose
  • 1H-benzotriazol
  • 4-methyl-1H-benzotriazol
  • 5-methyl-1H-benzotriazol
  • sum _Methylbenzotriazole

Report
PT 3/22
PT 3/22 - BTXE/VOC in waste water in Abwasser
Parameters:
  • benzene
  • toluene
  • o-xylene
  • m-xylene
  • ethylbenzene
  • trichloroethene
  • tetrachloroethene
  • 1,1,1-trichloroethane
  • dichloromethane

Report
PT 2/22
TW S7		PT 2/22 - TW S7 - trifluoroacetic acid in drinking water
Parameters:
  • trifluoroacetic acid

Report
PT 1/22
TW A4		PT 1/22 - TW A4 - General parameters in drinking water
Parameters:
  • Color (SAC436)
  • electr. conductivity
  • pH-value
  • turbidity

Report
PT 10/21
TW O3		PT 10/21 - TW O3 - PAH
Parameters:
  • naphthalene
  • acenaphthene
  • fluorene
  • phenanthrene
  • anthracene
  • fluoranthene
  • pyrene
  • benzo[a]anthracene
  • chrysene
  • benzo[b]fluoranthene
  • benzo[k]fluoranthene
  • benzo[a]pyrene
  • dibenz[ah]anthracene
  • benzo[ghi]perylene
  • indeno[1,2,3-cd]pyrene

Report
PT 9/21
PT 9/21 - sum parameters
Parameters:
  • adsorbable organic halogens
  • chemical oxygen demand
  • total organic carbon
  • total bound nitrogen
  • phenoles

Report
PT UKWIR 14/21
PT UKWIR 14/21 - Tributyltin
Parameters:
  • Tributyltin

Report
PT 7/21
TW S5		PT 7/21 - TW S5 - sulfonyl urea herbicides
Parameters:
  • amidosulfuron
  • metsulfuron-methyl
  • rimsulfuron
  • thifensulfuron-methyl
  • triasulfuron

Report
PT UKWIR 13/21
PT UKWIR 13/21 - Triclosan
Parameters:
  • triclosan

Report
PT UKWIR 12/21
PT UKWIR 12/21 - Nonylphenol, Octylphenol
Parameters:
  • Nonylphenol
  • Octylphenol

Report
PT 6/21
TW A3		PT 6/21 - TW A3 - cations
Parameters:
  • aluminium
  • boron
  • calcium
  • iron
  • magnesium
  • manganese
  • sodium
  • potassium
  • silicate

Report
PT UKWIR 11/21
PT UKWIR 11/21 - Hexabromocyclododecanes
Parameters:
  • Hexabromocylododecane

Report
PT UKWIR 10/21
PT UKWIR 10/21 - Cypermethrin
Parameters:
  • Cypermethrin

Report
PT UKWIR 9/21
PFOS, PFOA		PT UKWIR 9/21 - PFOS, PFOA
Parameters:
  • Perfluorooctane sulfonic acid
  • Perfluorooctanoic acid

Report
PT UKWIR 8/21
PT UKWIR 8/21 - Benzo[a]pyrene, Fluoranthene
Parameters:
  • benzo[a]pyrene
  • fluoranthene

Report
PT UKWIR 7/21
PT UKWIR 7/21 - Tributyltin
Parameters:
  • Tributyltin

Report
PT 5/21
PT 5/21- total petroleum hydrocarbon index
Parameters:
  • total petroleum hydrocarbon index

Report
PT UKWIR 6/21
PT UKWIR 6/21 - Triclosan
Parameters:
  • triclosan

Report
PT UKWIR 5/21
PT UKWIR 5/21 - Nonylphenol, Octylphenol
Parameters:
  • Nonylphenol
  • Octylphenol

Report
PT 4/21
TW S6		PT 4/21 - TW S6 - X-ray contrast media
Parameters:
  • amidotrizoic acid
  • iodipamide
  • iohexol
  • iomeprol
  • iopamidol
  • iopromide
  • iothalamic acid
  • ioaxglic acid
  • ioxitalamic acid

Report
PT 3/21
TW O2		PTR 3/21 - TW O2 - VOC/benzene
Parameters:
  • 1,2-dichloroethane
  • tetrachloroethene
  • trichloroethene
  • trichloromethane
  • bromodichloromethane
  • dibromochloromethane
  • tribromomethane
  • benzene
  • chloroethene

Report
PT UKWIR 4/21
PT UKWIR 4/21 - Hexabromocyclododecanes
Parameters:
  • Hexabromocylododecane

Report
PT UKWIR 3/21
PT UKWIR 3/21 - Cypermethrin
Parameters:
  • Cypermethrin

Report
PT 2/21
PT 2/21 - elements in waste water
Parameters:
  • aluminium
  • arsenic
  • lead
  • cadmium
  • chromium
  • iron
  • copper
  • nickel
  • mercury
  • zinc

Report
PT UKWIR 2/21
PT UKWIR 2/21 - PFOS, PFOA
Parameters:
  • Perfluorooctane sulfonic acid
  • Perfluorooctanoic acid

Report
PT UKWIR 1/21
PT UKWIR 1/21 - Benzo[a]pyrene, Fluoranthene
Parameters:
  • benzo[a]pyrene
  • fluoranthene

Report
PT 1/21
TW A2		PT 1/21 - TW A2 - trace elements
Parameters:
  • antimony
  • arsenic
  • lead
  • cadmium
  • chromium
  • copper
  • nickel
  • selenium
  • uranium
  • mercury

Report
PT UKWIR 14/20
Tributyltin		Priority substances at low concentrations in surface water
Parameters:
  • Tributyltin

Report
PT UKWIR 13/20
Triclosan		Priority substances at low concentrations in surface water
Parameters:
  • triclosan

Report
PT UKWIR 12/20
Priority substances at low concentrations in surface water
Parameters:
  • Nonylphenol
  • Octylphenol
RV 8/20
TW S10		epichlorohydrin, acrylamide
Parameters:
  • epichlorohydrin
  • acrylamide

Report
PT 7/20
TW O1		PSM GC/MS oder HPLC/UV
Parameters:
  • atrazine
  • desethylatrazine
  • metribuzin
  • tebuconazole
  • terbuthylazine
  • bromacil
  • DCMU
  • ethofumesate
  • flufenacet
  • hexazinone
  • isoproturon
  • metalaxyl
  • metamitron
  • methabenzthiazuron
  • dichlorobenzamide
  • desethylterbuthylazin
  • metolachlor

Report
PT 6/20
58. LÜRV		nutrients and ions
Parameters:
  • ammonium nitrogen
  • nitrate nitrogen
  • nitrite nitrogen
  • total phosphorous
  • chromium(VI)
  • total cyanide
  • cyanide (weak acid dissociable)

Report
PT UKWIR 11/20
Priority substances at low concentrations in surface water
Parameters:
  • Hexabromocylododecane
PT UKWIR 10/20
Priority substances at low concentrations in surface water
Parameters:
  • Cypermethrin
PT 5/20
TW S4		PFC
Parameters:
  • Perfluorobutanoic acid
  • Perfluoropentanoic acid
  • Perfluorohexanoic acid
  • Perfluoroheptanoic acid
  • Perfluorooctanoic acid
  • Perfluorononanoic acid
  • Perfluorodecanoic acid
  • 1-Perfluorobutanesulfonic acid
  • Perfluorohexane-1-sulphonic acid
  • Perfluorooctane sulfonic acid

Report
PT UKWIR 9/20
Priority substances at low concentrations in surface water
Parameters:
  • Perfluorooctane sulfonic acid
  • Perfluorooctanoic acid
PT UKWIR 8/20
Priority substances at low concentrations in surface water
Parameters:
  • benzo[a]pyrene
  • fluoranthene
PT UKWIR 7/20
Priority substances at low concentrations in surface water
Parameters:
  • Tributyltin
PT 4/20
TW O5		PSM HPLC/MS
Parameters:
  • N,N-Dimethylsulfamide
  • methyl-desphenylchloridazon
  • desphenylchloridazon
  • metazachloric acid
  • metazachloric sulfonic acid
  • metolachloric acid
  • metolachloric sulfonic acid
  • glyphosate
  • AMPA

Report
PT 3/20
TW S3		alkylphenols
Parameters:
  • Nonylphenol
  • Octylphenol
  • Bisphenol-A

Report
PT UKWIR 6/20
Triclosan		Priority substances at low concentrations in surface water
Parameters:
  • triclosan
PT UKWIR 5/20
alkylphenoles		Priority substances at low concentrations in surface water
Parameters:
  • Nonylphenol
  • Octylphenol

Report
PT 2/20
TW A5		other inorganic parameters
Parameters:
  • ammonium
  • total cyanide
  • oxidisability
  • total organic carbon

Report
PT UKWIR 4/20
Priority substances at low concentrations in surface water
Parameters:
  • Hexabromocylododecane

Report
PT UKWIR 3/20
Priority substances at low concentrations in surface water
Parameters:
  • Cypermethrin

Report
PT UKWIR 2/20
Priority substances at low concentrations in surface water
Parameters:
  • Perfluorooctane sulfonic acid
  • Perfluorooctanoic acid

Report
PT UKWIR 1/20
Priority substances at low concentrations in surface water
Parameters:
  • benzo[a]pyrene
  • fluoranthene

Report
PT 1/20
BTXE/VOC		BTXE/VOC in waste water
Parameters:
  • benzene
  • toluene
  • o-xylene
  • m-xylene
  • ethylbenzene
  • trichloroethene
  • tetrachloroethene
  • 1,1,1-trichloroethane
  • dichloromethane

Report

Proficiency tests - Drinking water

Recommendation of the Federal Environment Agency - Cooperation with other PT providers - Evaluation …

General information on proficiency tests

Importance - standards - procedure - evlaution and assessment

Other proficiency tests

Interlaboratory comparisons

Proficiency tests - Wastewater

"Länderübergreifende" proficiency tests (LÜRV; inter-state proficiency tests) - PT programme - …

Proficiency tests for waste water …

Guideline for quality-assured self-monitoring - proficiency test - evaluation and assessment
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