Results: 1621
Analysis type: >
Page: 44
Analysis of substance: Report limit:
dry matter 0.1 %
Hf 0.5 mg/kg dry weight
Nb 0.5 mg/kg dry weight
Os, Osmium 0.5 mg/kg dry weight
Ta 0.5 mg/kg dry weight

Metals by ICP-MS - autoclave digestion - group 4

Package info

Price: 2.520 NOK / sample
Std. response time: 5 work days
Discount group: 1
Sample type: Soil, sludge and sediment
Analysis type: Elements
Express: Yes
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
Langelier Index

Langelier index in water

Package info

Price: 1.460 NOK / sample
Std. response time: 10 work days
Fastest response time: 2 work days
Discount group: 1
Sample type: Water
Analysis type: Other analyses
Sample amount: 1000 ml
Container: Glass
Method: Determination of CaCO3 saturation by calculation of pH saturation value according to Strohecker and Langelier. DIN 38404-C10 R2.
Remarks: Enter the temperature and pH at the time of sampling on the order sheet. This information must be included in the lab for calculating the result.
Lab: GBA
Analysis of substance: Report limit:
Cs, cesium 0.5 mg/kg dry weight
Ge, Germanium 0.5 mg/kg dry weight
Au, Gold 0.5 mg/kg dry weight
Ir, Iridium 0.5 mg/kg dry weight
La 0.5 mg/kg dry weight
Pd, Palladium 0.5 mg/kg dry weight
Pt, Platinum 0.5 mg/kg dry weight
Rh, Rhodium 0.5 mg/kg dry weight
Rb 0.5 mg/kg dry weight
W 0.5 mg/kg dry weight
U 0.1 mg/kg dry weight

Metals by ICP-MS - autoclave digestion - group 3

Package info

Price: 2.520 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Soil, sludge and sediment
Analysis type: Elements
Method: ICP-SFMS, SS-EN ISO 17294-2
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
Br, Bromine 0.01 %

Total bromine in material and solid fuel samples

Package info

Price: 1.010 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Waste
Analysis type: Elements
Container: zip bag
Method: ISO 16994, EN 14582, EN 15408
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
PCB 28 0.25 ng/l
PCB 52 0.25 ng/l
PCB 101 0.25 ng/l
PCB 118 0.25 ng/l
PCB 138 0.25 ng/l
PCB 153 0.25 ng/l
PCB 180 0.25 ng/l
sum of PCB-7 ng/l

PCB-7 in clean water (Low LOQ)

Package info

Price: 2.520 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Water
Analysis type: Organic compounds
Sample amount: 2000 ml
Container: Glass
Method: DIN 38407-37: 2013-11
Accreditation: Yes
Remarks: Lab: GBA
Analysis of substance: Report limit:
Atrazine 0.01 µg/l
Atrazine-desethyl 0.01 µg/l
Chlorfenvinfos 0.01 µg/l
Linuron 0.02 µg/l
Metalaxyl 0.01 µg/l
Propachlor 0.01 µg/l
Propiconazole 0.01 µg/l
Simazine 0.01 µg/l
Terbuthylazine 0.01 µg/l
Metribuzin 0.03 µg/l
Metsulfuron-methyl 0.01 µg/l
Thifensulfuron-methyl 0.01 µg/l

Pesticides by LCMS (screening II) (OV-3Y)

Package info

Price: 2.455 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Water
Analysis type: Pesticides
Sample amount: 250 ml
Container: 250 ml dark glas
Accreditation: Yes
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
Salmonella 1 påvist/ikke påvist

Salmonella in food, composite sample

Package info

Price: 545 NOK / sample
Std. response time: 3 work days
Discount group: 1
Sample type: Food
Analysis type: Microbiology
Method: AFNOR UNI 03/06-12/07
Accreditation: Yes
Remarks: MU is small
See instructions for Listeria Monocytogenes and Salmonella hygiene control - swabs:
INSTRUCTIONS
See instructions for Listeria Monocytogenes and Salmonella hygiene control - cloth:
INSTRUCTIONS
Lab: ALS Oslo
1 Detection limit 2 CFU/25 g
Analysis of substance: Report limit:
Al 2 mg/kg
antimony (Sb) 0.02 mg/kg
As, arsenic 0.02 mg/kg
Ba 0.2 mg/kg
Be 0.003 mg/kg
B 2 mg/kg
Cd, cadmium 0.005 mg/kg
Ca 30 mg/kg
Cs, cesium 0.003 mg/kg
Cr, chromium 0.05 mg/kg
Co 0.02 mg/kg
Cu, copper 0.2 mg/kg
Fe 2 mg/kg
Pb, lead 0.03 mg/kg
Li 0.2 mg/kg
Mg, magnesium 20 mg/kg
Mn 0.2 mg/kg
Hg, mercury 0.02 mg/kg
Mo 0.003 mg/kg
Ni, nickel 0.05 mg/kg
Pd, Palladium 1 0.002 mg/kg
P 50 mg/kg
K 200 mg/kg
Rb 0.05 mg/kg
Se 0.2 mg/kg
Si 200 mg/kg
Ag 0.003 mg/kg
Na (sodium) 50 mg/kg
Sr 0.05 mg/kg
S 50 mg/kg
Tl 0.003 mg/kg
Th 0.003 mg/kg
Sn 0.05 mg/kg
Ti 2 mg/kg
U 0.003 mg/kg
V 0.02 mg/kg
Zn, zink 0.5 mg/kg

Metals in dried food products after HF digestion (F-15)

Package info

Price: 3.720 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Remarks: Price for the first element: NOK 830
Price for each subsequent element NOK 150
Price for sample preparation can be added. Please contact us.
Lab: ALS Luleå
1 The parameter is not accredited.
Analysis of substance: Report limit:
Al 0.5 mg/kg
antimony (Sb) 0.005 mg/kg
As, arsenic 0.005 mg/kg
Ba 0.05 mg/kg
Be 0.001 mg/kg
B 0.5 mg/kg
Cd, cadmium 0.002 mg/kg
Ca 10 mg/kg
Cs, cesium 0.001 mg/kg
Cr, chromium 0.02 mg/kg
Co 0.005 mg/kg
Cu, copper 0.05 mg/kg
Fe 0.5 mg/kg
Pb, lead 0.01 mg/kg
Li 0.05 mg/kg
Mg, magnesium 5 mg/kg
Mn 0.05 mg/kg
Hg, mercury 0.005 mg/kg
Mo 0.01 mg/kg
Ni, nickel 0.02 mg/kg
Pd, Palladium 1 0.002 mg/kg
P 20 mg/kg
K 50 mg/kg
Rb 0.02 mg/kg
Se 0.05 mg/kg
Si 50 mg/kg
Ag 0.001 mg/kg
Na (sodium) 20 mg/kg
Sr 0.02 mg/kg
S 20 mg/kg
Tl 0.001 mg/kg
Th 0.001 mg/kg
Sn 0.02 mg/kg
Ti 0.5 mg/kg
U 0.001 mg/kg
V 0.005 mg/kg
Zn, zink 0.2 mg/kg

Metals in fresh food products after HF digestion (F-15)

Package info

Price: 3.720 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Remarks: Price for the first element: NOK 830
Price for each subsequent element NOK 150
Price for sample preparation can be added. Please contact us.
Lab: ALS Luleå
1 The parameter is not accredited.
Analysis of substance: Report limit:
Al 0.5 mg/kg
antimony (Sb) 0.005 mg/kg
As, arsenic 0.005 mg/kg
Ba 0.05 mg/kg
Be 0.001 mg/kg
B 0.5 mg/kg
Cd, cadmium 0.002 mg/kg
Ca 10 mg/kg
Cs, cesium 0.001 mg/kg
Cr, chromium 0.02 mg/kg
Co 0.005 mg/kg
Cu, copper 0.05 mg/kg
Fe 0.5 mg/kg
Pb, lead 0.01 mg/kg
Li 0.05 mg/kg
Mg, magnesium 5 mg/kg
Mn 0.05 mg/kg
Hg, mercury 0.005 mg/kg
Mo 0.01 mg/kg
Ni, nickel 0.02 mg/kg
Pd, Palladium 1 0.02 mg/kg
P 20 mg/kg
K 50 mg/kg
Rb 0.02 mg/kg
Se 0.05 mg/kg
Si 50 mg/kg
Ag 0.001 mg/kg
Na (sodium) 20 mg/kg
Sr 0.02 mg/kg
S 20 mg/kg
Tl 0.001 mg/kg
Th 0.001 mg/kg
Sn 0.02 mg/kg
Ti 0.5 mg/kg
U 0.001 mg/kg
V 0.005 mg/kg
Zn, zink 0.2 mg/kg

Metals in vegetable/animal oil after HF digestion (F-15)

Package info

Price: 3.720 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Remarks: Price for the first element: NOK 830
Price for each subsequent element NOK 150
Price for sample preparation can be added. Please contact us.
Lab: ALS Luleå
1 The parameter is not accredited.
Analysis of substance: Report limit:
Al 0.5 mg/l
antimony (Sb) 0.1 µg/l
As, arsenic 0.5 µg/l
Ba 0.005 mg/l
Be 0.1 µg/l
B 0.05 mg/l
Cd, cadmium 0.05 µg/l
Ca 0.2 mg/l
Cs, cesium 0.05 µg/l
Cr, chromium 0.002 mg/l
Co 0.2 µg/l
Cu, copper 0.005 mg/l
Fe 0.05 mg/l
Pb, lead 0.5 µg/l
Li 0.005 mg/l
Mg, magnesium 0.05 mg/l
Mn 0.005 mg/l
Hg, mercury 0.2 µg/l
Mo 0.001 mg/l
Ni, nickel 0.002 mg/l
Pd, Palladium 0.005 µg/l
P 0.1 mg/l
K 0.1 mg/l
Rb 0.001 mg/l
Se 0.005 mg/l
Si 3 mg/l
Ag 0.05 µg/l
Na (sodium) 0.2 mg/l
Sr 0.002 mg/l
S 0.5 mg/l
Tl 0.05 µg/l
Th 0.05 µg/l
Sn 0.002 mg/l
Ti 0.01 mg/l
U 0.05 µg/l
V 0.5 µg/l
Zn, zink 0.02 mg/l

Metals in mineral water/soft drinks after HF digestion (F-15)

Package info

Price: 3.720 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Remarks: Price for the first element: NOK 830
Price for each subsequent element NOK 150
Price for sample preparation can be added. Please contact us.
Lab: ALS Luleå
Analysis of substance: Report limit:
Al 0.5 mg/l
antimony (Sb) 0.1 µg/l
As, arsenic 0.5 µg/l
Ba 0.005 mg/l
Be 0.1 µg/l
B 0.05 mg/l
Cd, cadmium 0.05 µg/l
Ca 0.2 mg/l
Cs, cesium 0.05 µg/l
Cr, chromium 0.002 mg/l
Co 0.2 µg/l
Cu, copper 0.005 mg/l
Fe 0.05 mg/l
Pb, lead 0.5 µg/l
Li 0.005 mg/l
Mg, magnesium 0.05 mg/l
Mn 0.005 mg/l
Hg, mercury 0.2 µg/l
Mo 0.001 mg/l
Ni, nickel 0.002 mg/l
P 0.1 mg/l
K 0.1 mg/l
Rb 0.001 mg/l
Se 0.005 mg/l
Si 3 mg/l
Ag 0.05 µg/l
Na (sodium) 0.2 mg/l
Sr 0.002 mg/l
S 0.5 mg/l
Tl 0.05 µg/l
Th 0.05 µg/l
Sn 0.002 mg/l
Ti 0.01 mg/l
U 0.05 µg/l
V 0.5 µg/l
Zn, zink 0.02 mg/l

Metals in juice/milk after HF digestion (F-15)

Package info

Price: 3.725 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Remarks: Price for first element: 750 kroner
Price for each additional element 150 kroner
Lab: ALS Luleå
Analysis of substance: Report limit:
Al 7 mg/l
antimony (Sb) 14 µg/l
As, arsenic 70 µg/l
Ba 0.7 mg/l
Be 14 µg/l
B 7 mg/l
Cd, cadmium 7 µg/l
Ca 28 mg/l
Cs, cesium 7 µg/l
Cr, chromium 0.28 mg/l
Co 28 µg/l
Cu, copper 0.7 mg/l
Fe 7 mg/l
Pb, lead 70 µg/l
Li 0.7 mg/l
Mg, magnesium 7 mg/l
Mn 0.7 mg/l
Hg, mercury 28 µg/l
Mo 0.14 mg/l
Ni, nickel 0.28 mg/l
P 14 mg/l
K 14 mg/l
Rb 0.14 mg/l
Se 0.7 mg/l
Si 420 mg/l
Ag 7 µg/l
Na (sodium) 28 mg/l
Sr 0.28 mg/l
S 70 mg/l
Tl 7 µg/l
Th 7 µg/l
Sn 0.28 mg/l
Ti 1.4 mg/l
U 7 µg/l
V 70 µg/l
Zn, zink 2.8 mg/l

Metals in effervescents, after HF digestion

Package info

Price: 3.725 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Remarks: Price for first element: 750 kroner
Price for each additional element 150 kroner
Lab: ALS Luleå
Analysis of substance: Report limit:
Al 2 mg/kg
antimony (Sb) 0.02 mg/kg
As, arsenic 0.2 mg/kg
Ba 0.2 mg/kg
Be 0.003 mg/kg
B 2 mg/kg
Cd, cadmium 0.005 mg/kg
Ca 30 mg/kg
Cs, cesium 0.003 mg/kg
Cr, chromium 0.05 mg/kg
Co 0.02 mg/kg
Cu, copper 0.2 mg/kg
Fe 2 mg/kg
Pb, lead 0.03 mg/kg
Li 0.03 mg/kg
Mg, magnesium 20 mg/kg
Mn 0.2 mg/kg
Hg, mercury 0.02 mg/kg
Mo 0.003 mg/kg
Ni, nickel 0.05 mg/kg
P 50 mg/kg
K 200 mg/kg
Rb 0.05 mg/kg
Se 0.2 mg/kg
Si 200 mg/kg
Ag 0.003 mg/kg
Na (sodium) 50 mg/kg
Sr 0.05 mg/kg
S 50 mg/kg
Tl 0.003 mg/kg
Th 0.003 mg/kg
Sn 0.05 mg/kg
Ti 2 mg/kg
U 0.003 mg/kg
V 0.02 mg/kg
Y 0.003 mg/kg
Zn, zink 0.5 mg/kg

Single elements in dietary supplement

Package info

Price: 4.520 NOK / sample
Std. response time: 10 work days
Fastest response time: 2 work days
Discount group: 1
Sample type: Food
Analysis type: Food analyses
Method: ICP-SFMS
Express: Yes, Fastest delivery 2 workdays, 100% addition. 3 days: 75%, 4 days 50%
Remarks: Price for the first element: NOK 830
Price for each subsequent element NOK 150
Lab: ALS Luleå
Analysis of substance: Report limit:
I, Iodine 0.0002 mg/kg

Iodine in food, liquid

Package info

Price: 1.935 NOK / sample
Std. response time: 10 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Food
Analysis type: Elements
Sample amount: 10 ml
Container: Original packaging (for products)
Method: ICP-SFMS
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: No
Remarks: Digestion and basic sample preparation included in the price.
Lab: ALS Luleå
Analysis of substance: Report limit:
Br, Bromine 200 µg/l
Chlorine, Cl 5 mg/l
I, Iodine 10 µg/l

Single halogens in saltwater and unclean water [V-7c]

Package info

Price: 1.980 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Water
Analysis type: Elements
Sample amount: 60 ml
Container: 60 ml plastic bottle Controlled
Method: ICP-SFMS iht SS-EN ISO 17294-2, US EPA Method 200.8,
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: No
Remarks: Lab: ALS Luleå
Analysis of substance: Report limit:
Iodine number

Iodine number

Package info

Price: 2.080 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Construction material etc.
Analysis type: Industri
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
phosphorus (total) 1 0.004-1.0 mg/l

Phosphorus, total in water, P-total

Package info

Price: 370 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Water
Analysis type: Elements
Sample amount: 60 ml
Container: 60 ml m/H2SO4
Method: ISO 15681-2
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Instruction: See instructions for sampling of nutrients and TOC/DOC: Instruks
Remarks: The samples can also be frozen
Time-sensitive parameter, must be preserved to pH <2 or frozen immediately after sampling
See instructions for sampling for Sample bottles added preservative for water analysis:
INSTRUCTIONS
Lab: ALS Oslo
1 The method is accredited for clean water, waste water and sea water
Measurement uncertainty 15%
Analysis of substance: Report limit:
phosphate (PO43-) 2 µg/l

Phosphate (PO43-) in water

Package info

Price: 255 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Water
Analysis type: Other analyses
Sample amount: 60 ml
Container: 60 ml plastic bottle
Method: ISO 15681-2 (2018)
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Remarks: Måleusikkerhet (MU) 15 %
Analysis of substance: Report limit:
fluoride (F-) 0.2 mg/l

Fluoride (F-) in water

Package info

Price: 255 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Water
Analysis type: Other analyses
Sample amount: 100 ml
Container: 100 ml PE
Method: ISO 10304-1
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Accreditation: Yes
Remarks: Måleusikkerhet (MU) 15 %
Analysis of substance: Report limit:
Azinphos-methyl 0.1 µg/l
Bromophos-ethyl 0.05 µg/l
Captan 0.05 µg/l
Carbophenothion 0.05 µg/l
Chlorfenvinfos 0.05 µg/l
Chlorpyrifos 0.05 µg/l
Chlorpyrifos-methyl 0.05 µg/l
Demeton-S-methyl 0.1 µg/l
Diazinon 0.1 µg/l
Dichlorvos 0.05 µg/l
Dimethoate 0.05 µg/l
Ethion 0.05 µg/l
Fenitrothion 0.05 µg/l
Fenthion 0.05 µg/l
Malathion 0.05 µg/l
Parathion-ethyl 0.05 µg/l
Parathion-methyl 0.05 µg/l
Phorate 0.1 µg/l
Phosmet 0.05 µg/l
Pirimiphos-ethyl 0.05 µg/l
Prothiofos 0.05 µg/l

Pesticides by GCMS - SPE

Package info

Price: 2.205 NOK / sample
Std. response time: 10 work days
Discount group: 1
Sample type: Water
Analysis type: Pesticides
Sample amount: 250 ml
Container: 250 ml Glass
Method: GC/MS
Accreditation: Yes
Remarks: Lab: ALS CZ
Analysis of substance: Report limit:
antimony (Sb) 0.5 mg/kg
As, arsenic 0.5 mg/kg
Ba 0.2 mg/kg
Be 0.01 mg/kg
Cd, cadmium 0.1 mg/kg
Cr, chromium 0.25 mg/kg
Co 0.1 mg/kg
Cu, copper 0.1 mg/kg
Fe 3 mg/kg
Pb, lead 1 mg/kg
Li 1 mg/kg
Mn 0.5 mg/kg
Hg, mercury 0.2 mg/kg
Mo 0.4 mg/kg
Ni, nickel 5 mg/kg
P 5 mg/kg
Ag 0.5 mg/kg
Sr 0.1 mg/kg
Tl 0.5 mg/kg
Sn 1 mg/kg
V 0.1 mg/kg
Zn, zink 1 mg/kg

Single metals in building material [ADD Metals]

Package info

Price: 2.175 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Soil, sludge and sediment
Analysis type: Elements
Sample amount: 10 g
Container: Rilsanpose
Method: EPA 200.7, ISO 11885
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Remarks: Price for first element: 500 kroner
Price for each additional element 200 kroner
Lab: ALS CZ
Analysis of substance: Report limit:

Analysis for COVID-19: SARS-Co-V-2 in wastewater, quantitative

Package info

Price: 4.765 NOK / sample
Std. response time: 4 work days
Sample type: Water
Analysis type: Other analyses
Sample amount: 500 ml
Container: 500 ml PE
Method: Quantification of SARS-CoV-2 by digital PCR
Accreditation: No
Remarks: Tidssensitiv analyse, må analyseres innen 24 timer etter prøveuttak og maks 72 timer.
Lab: ALS Tondela
Analysis of substance: Report limit:

Analysis for COVID-19: SARS-Co-V-2 in wastewater, qualitative

Package info

Price: 2.385 NOK / sample
Std. response time: 3 work days
Sample type: Water
Analysis type: Other analyses
Sample amount: 500 ml
Container: 500 ml PE
Method: Detection of SARS-CoV-2 by Real-Time PCR
Accreditation: No
Remarks: Tidssensitiv analyse, må analyseres innen 24 timer etter prøveuttak og maks 72 timer.
Lab: ALS Tondela
Analysis of substance: Report limit:
V mg/kg dry weight

Vanadium in soil, addon

Package info

Price: 230 NOK / sample
Std. response time: 5 work days
Fastest response time: 1 work day
Discount group: 1
Sample type: Soil, sludge and sediment
Analysis type: Elements
Sample amount: 10 g
Container: Rilsanpose
Method: DS 259:2003+DS/EN ISO 22036:2024
Express: Yes, Fastest delivery 1 workday, 100% addition. 2 days: 75%, 3 days: 50%
Remarks: Lab: ALS DK