RM in circulation

 

INFORMATION

about the RM`s lots in circulation, produced by the Center

 

The date of the lot

production

(characterization)

The name of RM,

RM N in the Center`s Register

RM status

RM N in the National RM`s State Register1

(RM N in the RM`s Interstate Register MSO2)

N of the Certificate on GSO type approval, valid until

Lot N

The results of characterization

The shelf life of the RM`s lot units,

until

RM` certified value

Relative (absolute*) error

of the RM certified value

(P = 0,95)3

January

2021

RM of electrical conductivity of aqueous media

A9.3.C-UEP-3-CSO

CRM

GSO 7376-97

(MSO 1119:2005)

N 5200 until 09.08.2022

37/UEP-3-CSO

0,1415 Sm/m

+ 0,25 %

February

2024

January

2021

RM of sodium dodecyl sulfate (SDS) aqueous solution (43A)

A2.6.VR-43A-CSO

CRM

GSO 8362-2003

(MSO 0620:2003)

N 5715 until

23.10.2023

7/43A-CSO

10,36 g/dm3

+ 1,1 %

February

2024

January

2021

RM of turbidity (formazine suspension)

A4.3.C-301-CSO

CRM

GSO 7271-96

(MSO 0101:1999)

N 5444 until 11.04.2023

78/301-CSO

4110 FTU

+ 1,7 %

February

2022

January

2021

RM of oil content in water-soluble matrix NPVM-0,5

A.4.3.NPVM-034-0,5-CSO

RM

------

------

12/034-0,5-CSO

0,50** mg

+ 2,5 %

February

2024

December

2020

RM of calcium ions aqueous solution (19K-1)

A2.6.VR-19K-1-CSO

CRM

GSO 8065-94

(MSO 0020:1998)

N 4831 until

18.07.2021

23/19K-1-CSO

1,002 g/dm3

+ 0,8 %

January

2025

December

2020

RM of total hardness of water

A4.3.C-302-CSO

CRM

GSO 7373-97

(MSO 1116:2005)

N 5446 until

11.04.2023

40/302-CSO

10,16 degrees of hardness

+ 1,3 %

January

2026

December

2020

RM of phenol

A3.1.O-101-CSO

CRM

GSO 7101-94 (MSO 0035:1998)

N 6575 until

18.05.2025

32/101-CSO

99,81 %

+ 0,04 %*

January

2023

December

2020

RM of potassium ions aqueous solution (18K-1)

A2.6.VR-18K-1-CSO

CRM

GSO 8092-94

(MSO 0019:1998)

N 4833 until

18.07.2021

25/18K-1-CSO

1,005 g/dm3

+ 0,6 %

January

2025

December

2020

RM of colour of aqueous solutions

(chromium-cobalt scale)

A4.3.C-306-CSO

CRM

GSO 7853-2000

(MSO 0254:2001)

N 6562 until 04.03.2025

67/306-CSO

503 degrees of colour

+ 1,5 %

January

2023

December

2020

RM of tetrachloroethylene for chromatography

A3.1.O-002-CSO

RM

------

------

8/002-CSO

99,95 %

+ 0,20 % *

January

2027

December

2020

RM of hydrochloric acid aqueous solution

A2.6.VR-024-CSO

CRM

CRM corresponds to the type of

GSO 9425-2009

(MSO 1593:2010)

------

4/024-CSO

0,994 mmol/dm3

+ 0,3 %

January

2026

December

2020

RM of oil content in water-soluble matrix NPVM-5

A.4.3.NPVM-034-5-CSO

RM

------

------

11/034-5-CSO

5,00** mg

+ 2,5 %

January

2024

December

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-4-CSO

CRM

GSO 7377-97

(MSO 1120:2005)

N 5201 until

09.08.2022

41/UEP-4-CSO

0,02933 Sm/m

+ 0,25 %

January

2024

November

2020

RM of dichromate oxidation of water (COD)

A4.3.C-304-CSO

CRM

GSO 7425-97

(MSO 1124:2005)

N 5247 until 10.11.2022

39/304-CSO

10 090 mg/dm3

+ 1,3 %

December

2022

November

2020

RM of iron (III) ions aqueous solution (5K-1)

A2.6.VR-5K-1-CSO

CRM

GSO 8032-94

(MSO 0009:1998)

N 4536 until

17.07.2020

36/5K-1-CSO

1,000 g/dm3

+ 0,3 %

December

2023

November

2020

RM of molybdenum (VI) ions aqueous solution (14K-1)

A2.6.VR-14K-1-CSO

CRM

GSO 8086-94

(MSO 0016:1998)

N 5249 until

10.11.2022

19/14K-1-CSO

1,010 g/dm3

+ 0,6 %

December

2023

November

2020

RM of metals aqueous solution (Al, As, Cu, Cd, Co, Cr) RM-3

A2.6-VR-403-CSO

CRM

GSO 7325-96 (MSO 0095:1999)

N 5743 until

01.11.2023

8/RM-3-CSO

Al –  0,499 g/dm3

As – 0,102 g/dm3

Cu – 0,101 g/dm3

Cd – 0,100 g/dm3

Co – 0,101 g/dm3

Cr – 0,101 g/dm3

+ 2,0 %

+ 2,0 %

+ 2,0 %

+ 2,0 %

+ 2,0 %

+ 2,0 %

December

2025

November

2020

RM of chloride-ions aqueous solutions

(set N 1A)

A2.6.VR-1A-CSO

CRM

GSO 6687-93 ÷ 6689-93

(MSO 0023:1998)

N 6558 until

04.03.2025

25/1A-1-CSO

25/1A-2-CSO

25/1A-3-CSO

1,006 g/dm3

0,503 g/dm3

0,1007 g/dm3

+ 0,5 %

+ 0,6 %

+ 0,6 %

December

2023

November

2020

RM of chloride-ions aqueous solution (1A-1)

A2.6.VR-1A-1-CSO

CRM

GSO 6687-93

(MSO 0023:1998)

N 6558 until

04.03.2025

25/1A-1-CSO

1,006 g/dm3

+ 0,5 %

December

2023

November

2020

RM of phosphate-ions aqueous solution (6A-1)

A2.6.VR-6A-1-CSO

CRM

GSO 7018-93

(MSO 0026:1998)

N 6560 until

04.03.2025

35/6A-1-CSO

1,001 g/dm3

+ 0,6 %

December

2023

November

2020

RM of chloroform

A3.1.O-110-CSO

CRM

GSO 7288-96 (MSO 0104:1999)

N 5192 until

09.08.2022

30/110-CSO

99,93 %

+ 0,02 %*

December

2023

November

2020

RM of oil content in water-soluble matrix NPVM-0,05

A.4.3.NPVM-034-0,05-CSO

RM

------

------

10/034-0,05-CSO

0,040** mg

+ 4,0 %

December

2023

November

2020

RM of oil content in water-soluble matrix NPVM-1

A.4.3.NPVM-034-1-CSO

RM

------

------

10/034-1-CSO

1,00** mg

+ 2,5 %

December

2023

October

2020

RM of sulfate-ions aqueous solution (41A)

A2.6.VR-41A-CSO

CRM

GSO 7437-98 (MSO 1126:2005)

N 5714 until

23.10.2023

20/41A-CSO

10,07 g/dm3

+ 0,6 %

November

2025

October

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-5-CSO

CRM

GSO 7378-97

(MSO 1121:2005)

N 5202 until

09.08.2022

53/UEP-5-CSO

0,004771 Sm/m

+ 0,25 %

November

2023

October

2020

RM of total mineralization of water

A4.3.C-017-CSO

CRM

GSO 9283-2008

(MSO 1581:2009)

N 5745 until

01.11.2023

13/017-CSO

50 700 mg/dm3

50 500 mg/dm3

+ 0,7 %

+ 0,7 %

November

2025

October

2020

RM of lead ions aqueous solution (2K-1)

A2.6.VR-2K-1-CSO

CRM

GSO 7012-93

(MSO 0006:1998)

N 5116 until 31.05.2022

24/2K-1-CSO

1,012 g/dm3

+ 0,4 %

November

2023

October

2020

RM of antimony (III) ions aqueous solution (23K-2)

A2.6.VR-23K-2-CSO

CRM

GSO 7204-95

(MSO 0086:1999)

N 5382 until

21.02.2023

8/23K-2-CSO

0,1022 g/dm3

+ 0,4 %

November

2025

October

2020

RM of electrical conductivity of aqueous media (UEP-2)

A9.3.C-UEP-2-CSO

CRM

GSO 7375-97

(MSO 1118:2005)

N 5199 until

09.08.2022

31/UEP-2-CSO

1,290 Sm/m

+ 0,25 %

November

2023

October

2020

RM of oil content in water-soluble matrix NPVM-5

A.4.3.NPVM-034-5-CSO

RM

------

------

10/034-5-CSO

5,00** mg

+ 2,5 %

November

2023

October

2020

RM of oil content in water-soluble matrix NPVM-0,1

A.4.3.NPVM-034-0,1-CSO

RM

------

------

19/034-0,1-CSO

0,100** mg

+ 2,5 %

November

2023

September

2020

RM of chlorobenzene

A3.1.O-105-CSO

CRM

CRM corresponds to the type of

GSO 7142-95

(MSO 0039:1998)

------

15/105-CSO

99,97 %

+ 0,01 %*

October

2023

September

2020

RM of benzene

A3.1.O-104-CSO

CRM

GSO 7141-95

(MSO 0038:1998)

N 6576 until

18.05.2025

19/104-CSO

99,92 %

+ 0,02 % *

October

2023

September

2020

RM of oil (a mixture of hexadecane, isooctane and benzene) in carbon tetrachloride (NP-1)

A3.1.OR-404-CSO

CRM

GSO 7424-97 (MSO 1123:2005)

N 5246 until

10.11.2022

27/NP-1-CSO

50,1 g/dm3

+ 2,5 %

October

2022

September

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-3-CSO

CRM

GSO 7376-97

(MSO 1119:2005)

N 5200 until 09.08.2022

36/UEP-3-CSO

0,1415 Sm/m

+ 0,25 %

October

2023

September

2020

RM of turbidity (formazine suspension)

A4.3.C-301-CSO

CRM

GSO 7271-96

(MSO 0101:1999)

N 5444 until 11.04.2023

77/301-CSO

3950 FTU

+ 1,7 %

October

2021

September

2020

RM of total alkalinity of water

A4.3.C-019-CSO

CRM

GSO 9285-2009

(MSO 1584:2009)

N 5896 until 10.04.2024

27/019-CSO

994 mmol/dm3

+ 0,6 %

April

2022

September

2020

RM of sodium ions aqueous solution (17K-1)

A2.6.VR-17K-1-CSO

CRM

GSO 8062-94

(MSO 0018:1998)

N 5248 until

10.11.2022

25/17K-1-CSO

1,002 g/dm3

+ 0,6 %

October

2024

September

2020

RM of total hardness of water

A4.3.C-018-CSO

CRM

GSO 9284-2008

(MSO 1582:2009)

N 5746 until 01.11.2023

9/018-CSO

100,7 degrees of hardness

+ 1,3 %

October

2025

September

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-1-CSO

CRM

GSO 7374-97

(MSO 1117:2005)

N 5198 until 09.08.2022

23/UEP-1-CSO

11,25 Sm/m

+ 0,25 %

October

2023

August

2020

RM of ammonium ions aqueous solutions (set N 15K)

A2.6.VR-15K-CSO

CRM

GSO 7015-93 ÷ 7017-93

(MSO 0017:1998)

N 4535 until

17.07.2021

37/15K-1-CSO

37/15K-2-CSO

37/15K-3-CSO

1,008 g/dm3

0,505 g/dm3

0,1024 g/dm3

+ 0,6 %

+ 0,6 %

+ 0,6 %

September

2023

August

2020

RM of chlorobenzene solution in methanol

(5/OR-1)

A3.1.OR-205.1-CSO

CRM

GSO 7142-95M

(MSO 0097:1999)

N 5598 until

29.06.2023

11/205.1-CSO

1,022 g/dm3

+2,2 %

September

2025

August

2020

RM of fluoride-ions aqueous solution (2A-1)

A2.6.VR-2A-1-CSO

CRM

GSO 7188-95

(MSO 0090:1999)

N 5240 until 10.11.2022

36/2A-1-CSO

0,996 g/dm3

+ 0,8 %

March

2022

August

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-5-CSO

CRM

GSO 7378-97

(MSO 1121:2005)

N 5202 until

09.08.2022

52/UEP-5-CSO

0,004762 Sm/m

+ 0,25 %

September

2023

August

2020

RM of nitrate-ions aqueous solution (5A-1)

A2.6.VR-5A-1-CSO

CRM

GSO 6696-93

(MSO 0025:1998)

N 6559 until

04.03.2025

32/5A-1-CSO

0,997 g/dm3

+ 0,4 %

September

2023

August

2020

RM of ammonium ions aqueous solution (15K-1)

A2.6.VR-15K-1-CSO

CRM

GSO 7015-93

(MSO 0017:1998)

N 4535 until

17.07.2021

37/15K-1-CSO

1,008 g/dm3

+ 0,6 %

September

2023

August

2020

RM of nitrite-ions aqueous solution (7A-1)

A2.6.VR-7A-1-CSO

CRM

GSO 7021-93

(MSO 0027:1998)

N 6561 until

04.03.2025

35/7A-1-CSO

1,018 g/dm3

+ 0,9 %

September

2023

August

2020

RM of colour of aqueous solutions

(chromium-cobalt scale)

A4.3.C-306-CSO

CRM

GSO 7853-2000

(MSO 0254:2001)

N 6562 until 04.03.2025

66/306-CSO

502 degrees of colour

+ 1,5 %

September

2022

August

2020

RM of toluene for chromatography

A3.1.O-001-CSO

RM

------

------

11/001-CSO

99,94%

+ 0,20 % *

September

2026

July

2020

RM of chromium (VI) ions aqueous solution (7K-1)

A2.6.VR-7K-1-CSO

CRM

CRM corresponds to the type of

GSO 8035-94

(MSO 0011:1998)

------

18/7K-1-CSO

1,005 g/dm3

+ 0,7 %

August

2024

July

2020

RM of silicon ions aqueous solution (Si-1)

A.6.VR-028-1-CSO

CRM

GSO 9729-2010

(MSO 1742:2011)

N 4646 until

19.11.2020

15/028-1-CSO

0,963 g/dm3

+ 0,8 %

February

2022

July

2020

RM of boron ions aqueous solution (39K-1)

A2.6.VR-39K-1-CSO

CRM

GSO 7337-96

(MSO 0089:1999)

N 5196 until

09.08.2022

23/39K-1-CSO

1,002 g/dm3

+ 0,9 %

August

2022

July

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-4-CSO

CRM

GSO 7377-97

(MSO 1120:2005)

N 5201 until

09.08.2022

40/UEP-4-CSO

0,02941 Sm/m

+ 0,25 %

August

2023

July

2020

RM of oil content in water-soluble matrix NPVM-1

A.4.3.NPVM-034-1-CSO

RM

------

------

9/034-1-CSO

1,00** mg

+ 2,5 %

August

2023

July

2020

RM of oil content in water-soluble matrix NPVM-0,1

A.4.3.NPVM-034-0,1-CSO

RM

------

------

18/034-0,1-CSO

0,100** mg

+ 2,5 %

August

2023

July

2020

RM of oil content in water-soluble matrix NPVM-0,02

A.4.3.NPVM-034-0,02-CSO

RM

------

------

4/034-0,02-CSO

0,020** mg

+ 4,0 %

August

2023

July

2020

RM of oil content in water-soluble matrix NPVM-5

A.4.3.NPVM-034-5-CSO

RM

------

------

9/034-5-CSO

5,00** mg

+ 2,5 %

August

2023

July

2020

RM of dichromate oxidation of water (COD)

A4.3.C-304-CSO

CRM

GSO 7425-97

(MSO 1124:2005)

N 5247 until 10.11.2022

38/304-CSO

10 180 mg/dm3

+ 1,4 %

August

2022

July

2020

RM of lithium ions aqueous solution

A2.6.VR-030-CSO

CRM

GSO 10229-2013

(MSO 1878:2014)

N 5499 until

08.05.2023

10/030-CSO

1,001 g/dm3

+ 0,8 %

February

2022

July

2020

RM of aluminum ions aqueous solution (42K)

A2.6.VR-42K-CSO

CRM

GSO 7854-2000

(MSO 0255:2001)

N 4830 until

18.07.2021

10/42K-CSO

1,007 g/dm3

+ 0,9 %

August

2024

July

2020

RM of sulfate-ions aqueous solution (4A-1)

A2.6.VR-4A-1-CSO

CRM

GSO 6693-93

(MSO 0024:1998)

N 4534 until

17.07.2021

27/4A-1-CSO

1,001 g/dm3

+ 0,6 %

August

2023

June

2020

RM of oil content in water-soluble matrix NPVM-0,5

A.4.3.NPVM-034-0,5-CSO

RM

------

------

11/034-0,5-CSO

0,50** mg

+ 2,5 %

July

2023

June

2020

RM of total alkalinity of water

A4.3.C-019-CSO

CRM

GSO 9285-2009

(MSO 1584:2009)

N 5896 until 10.04.2024

26/019-CSO

998 mmol/dm3

+ 0,7 %

January

2022

June

2020

RM of fluoride-ions aqueous solution (2A-1)

A2.6.VR-2A-1-CSO

CRM

GSO 7188-95

(MSO 0090:1999)

N 5240 until 10.11.2022

35/2A-1-CSO

0,995 g/dm3

+ 0,8 %

January

2022

June

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-3-CSO

CRM

GSO 7376-97

(MSO 1119:2005)

N 5200 until 09.08.2022

35/UEP-3-CSO

0,1421 Sm/m

+ 0,25 %

July

2023

June

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-5-CSO

CRM

GSO 7378-97

(MSO 1121:2005)

N 5202 until

09.08.2022

51/UEP-5-CSO

0,004733 Sm/m

+ 0,25 %

July

2023

June

2020

RM of tin (IV) ions aqueous solution (27K-1)

A2.6.VR-27K-1-CSO

CRM

GSO 7238-96

(MSO 0088:1999)

N 5383 until 21.02.2023

13/27K-1-CSO

0,973 g/dm3

+ 0,4 %

July

2023

June

2020

RM of manganese (II) ions aqueous solution (10K-1)

A2.6.VR-10K-1-CSO

CRM

CRM corresponds to the type of

GSO 8056-94

(MSO 0014:1998)

------

17/10K-1-CSO

1,002 g/dm3

+ 0,5 %

July

2025

June

2020

RM of colour of aqueous solutions

(chromium-cobalt scale)

A4.3.C-306-CSO

CRM

GSO 7853-2000

(MSO 0254:2001)

N 6562 until 04.03.2025

65/306-CSO

497 degrees of colour

+ 1,5 %

July

2022

June

2020

RM of copper ions aqueous solutions (set N 3K)

A2.6.VR-3K-CSO

CRM

GSO 7998-93 ÷ 8000-93

(MSO 0007:1998)

N 5120 until

31.05.2022

27/3K-1-CSO

27/3K-2-CSO

27/3K-3-CSO

1,012 g/dm3

0,508 g/dm3

0,1018 g/dm3

+ 0,2 %

+ 0,3 %

+ 0,4 %

July

2023

June

2020

RM of copper ions aqueous solution (3K-1)

A2.6.VR-3K-1-CSO

CRM

GSO 7998-93

(MSO 0007:1998)

N 5120 until

31.05.2022

27/3K-1-CSO

1,012 g/dm3

+ 0,2 %

July

2023

June

2020

RM of chloride-ions aqueous solution (40A)

A2.6.VR-40A-CSO

CRM

GSO 7436-98

(MSO 1125:2005)

N 5713 until

23.10.2023

19/40A-CSO

10,16 g/dm3

+ 0,6 %

July

2025

May

2020

RM of potassium ions aqueous solutions

(set N 18K)

A2.6.VR-18K-CSO

CRM

GSO 8092-94 ÷ 8094-94

(MSO 0019:1998)

N 4833 until

18.07.2021

24/18K-1-CSO

24/18K-2-CSO

24/18K-3-CSO

1,004 g/dm3

0,503 g/dm3

0,1011 g/dm3

+ 0,6 %

+ 0,6 %

+ 0,7 %

June

2024

May

2020

RM of potassium ions aqueous solution (18K-1)

A2.6.VR-18K-1-CSO

CRM

GSO 8092-94

(MSO 0019:1998)

N 4833 until

18.07.2021

24/18K-1-CSO

1,004 g/dm3

+ 0,6 %

June

2024

May

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-4-CSO

CRM

GSO 7377-97

(MSO 1120:2005)

N 5201 until

09.08.2022

39/UEP-4-CSO

0,02934 Sm/m

+ 0,25 %

June

2023

May

2020

RM of strontium ions aqueous solution (25K-1)

A2.6.VR-25K-1-CSO

CRM

GSO 7145-95

(MSO 0083:1999)

N 5119 until 31.05.2022

12/25K-1-CSO

1,008 g/dm3

+ 0,7 %

June

2023

May

2020

RM of calcium ions aqueous solutions (set N 19K)

A2.6.VR-19K-CSO

CRM

GSO 8065-94 ÷ 8067-94

(MSO 0020:1998)

N 4831 until

18.07.2021

22/19K-1-CSO

22/19K-2-CSO

22/19K-3-CSO

1,007 g/dm3

0,503 g/dm3

0,0998 g/dm3

+ 0,8 %

+ 0,8 %

+ 0,8 %

June

2024

May

2020

RM of calcium ions aqueous solution (19K-1)

A2.6.VR-19K-1-CSO

CRM

GSO 8065-94

(MSO 0020:1998)

N 4831 until

18.07.2021

22/19K-1-CSO

1,007 g/dm3

+ 0,8 %

June

2024

May

2020

RM of turbidity (formazine suspension)

A4.3.C-301-CSO

CRM

GSO 7271-96

(MSO 0101:1999)

N 5444 until 11.04.2023

76/301-CSO

3980 FTU

+ 1,7 %

June

2021

May

2020

RM of phenol solution in methanol (1/OR-1)

A3.1.OR-201.1-CSO

CRM

GSO 7353-97

(MSO 1115:2005)

N 5445 until

11.04.2023

21/201.1-CSO

1,001 g/dm3

+2,9 %

June

2023

April

2020

RM of silver ions aqueous solution

A2.6.VR-027-CSO

CRM

GSO 9727-2010

(MSO 1740:2011)

N 4644 until 19.11.2020

6/027-CSO

1,004 g/dm3

+ 0,3 %

May

2023

April

2020

RM of total hardness of water

A4.3.C-302-CSO

CRM

GSO 7373-97

(MSO 1116:2005)

N 5446 until

11.04.2023

39/302-CSO

10,30 degrees of hardness

+ 1,3 %

May

2025

April

2020

RM of carbon tetrachloride

A3.1.O-107-CSO

CRM

GSO 7213-95

(MSO 0103:1999)

N 5243 until

10.11.2022

17/107-CSO

99,90 %

+ 0,02 %*

May

2023

April

2020

RM of phosphate-ions aqueous solutions (set N 6A)

A2.6.VR-6A-CSO

CRM

GSO 7018-93 ÷ 7020-93

(MSO 0026:1998)

N 6560 until

04.03.2025

34/6A-1-CSO 34/6A-2-CSO 34/6A-3-CSO

1,000 g/dm3

0,501 g/dm3

0,0996 g/dm3

+ 0,6 %

+ 0,6 %

+ 0,6 %

May

2023

April

2020

RM of phosphate-ions aqueous solution (6A-1)

A2.6.VR-6A-1-CSO

CRM

GSO 7018-93

(MSO 0026:1998)

N 6560 until

04.03.2025

34/6A-1-CSO

1,000 g/dm3

+ 0,6 %

May

2023

April

2020

RM of iron (III) ions aqueous solutions (set N 5K)

A2.6.VR-5K-CSO

CRM

GSO 8032-94 ÷ 8034-94

(MSO 0009:1998)

N 4536 until

17.07.2020

35/5K-1-CSO

35/5K-2-CSO

35/5K-3-CSO

1,005 g/dm3

0,498 g/dm3

0,0993 g/dm3

+ 0,3 %

+ 0,3 %

+ 0,4 %

May

2023

April

2020

RM of iron (III) ions aqueous solution (5K-1)

A2.6.VR-5K-1-CSO

CRM

GSO 8032-94

(MSO 0009:1998)

N 4536 until

17.07.2020

35/5K-1-CSO

1,005 g/dm3

+ 0,3 %

May

2023

April

2020

RM of oil content in water-soluble matrix NPVM-0,5

A.4.3.NPVM-034-0,5-CSO

RM

------

------

10/034-0,5-CSO

0,50** mg

+ 2,5 %

May

2023

April

2020

RM of oil content in water-soluble matrix NPVM-0,1

A.4.3.NPVM-034-0,1-CSO

RM

------

------

17/034-0,1-CSO

0,100** mg

+ 2,5 %

May

2023

April

2020

RM of oil content in water-soluble matrix NPVM-0,05

A.4.3.NPVM-034-0,05-CSO

RM

------

------

9/034-0,05-CSO

0,040** mg

+ 4,0 %

May

2023

April

2020

RM of oil content in water-soluble matrix NPVM-0,02

A.4.3.NPVM-034-0,02-CSO

RM

------

------

3/034-0,02-CSO

0,020** mg

+ 4,0 %

May

2023

April

2020

RM of dichromate oxidation of water (COD)

A4.3.C-304-CSO

CRM

GSO 7425-97

(MSO 1124:2005)

N 5247 until 10.11.2022

37/304-CSO

10 000 mg/dm3

+ 1,4 %

May

2022

April

2020

RM of sulfide-ions aqueous solution

A2.6.VR-026-CSO

CRM

GSO 9728-2010

(MSO 1741:2011)

N 4645 until

19.11.2020

10/026-CSO

1,010 g/dm3

+ 0,9 %

November

2021

March

2020

RM of electrical conductivity of aqueous media

A9.3.C-UEP-5-CSO

CRM

GSO 7378-97

(MSO 1121:2005)

N 5202 until

09.08.2022

50/UEP-5-CSO

0,004674 Sm/m

+ 0,25 %

April

2023

March

2020

RM of chlorobenzene solution in methanol

(5/OR-1)

A3.1.OR-205.1-CSO

CRM

GSO 7142-95M

(MSO 0097:1999)

N 5598 until

29.06.2023

10/205.1-CSO

1,024 g/dm3

+2,2 %

April

2025

March

2020

RM of lithium ions aqueous solution

A2.6.VR-030-CSO

CRM

GSO 10229-2013

(MSO 1878:2014)

N 5499 until

08.05.2023

9/030-CSO

1,009 g/dm3

+ 0,8 %

October

2021

March

2020

RM of electrical conductivity of aqueous media (UEP-2)

A9.3.C-UEP-2-CSO

CRM

GSO 7375-97

(MSO 1118:2005)

N 5199 until

09.08.2022

30/UEP-2-CSO

1,292 Sm/m

+ 0,25 %

April

2023

March

2020

RM of turbidity (formazine suspension)

A4.3.C-301-CSO

CRM

GSO 7271-96

(MSO 0101:1999)

N 5444 until 11.04.2023

75/301-CSO

4010 FTU

+ 1,7 %

April

2021

March

2020

RM of oil content in water-soluble matrix NPVM-1

A.4.3.NPVM-034-1-CSO

RM

------

------

8/034-1-CSO

1,00** mg

+ 2,5 %

April

2023

March

2020

RM of hexadecane

A3.1.O-108-CSO

CRM

GSO 7289-96

(MSO 0105:1999)

N 5193 until 09.08.2022

19/108-CSO

99,74%

+0,06 %*

April

2022

March

2020

RM of silicon ions aqueous solution (Si-1)

A.6.VR-028-1-CSO

CRM

GSO 9729-2010

(MSO 1742:2011)

N 4646 until

19.11.2020

14/028-1-CSO

0,966 g/dm3

+ 0,8 %

October

2021

March

2020

RM of chloroform

A3.1.O-110-CSO

CRM

GSO 7288-96 (MSO 0104:1999)

N 5192 until

09.08.2022

29/110-CSO

99,91 %

+ 0,02 %*

April

2023

March

2020

RM of chloroform for chromatography

A3.1.O-004-CSO

RM

------

------

10/004-CSO

99,95 %

+0,20 %*

April

2023

March

2020

RM of colour of aqueous solutions

(chromium-cobalt scale)

A4.3.C-306-CSO

CRM

GSO 7853-2000

(MSO 0254:2001)

N 6562 until 04.03.2025

64/306-CSO

503 degrees of colour

+ 1,5 %

April

2022

February

2020

RM of barium ions aqueous solution (21K-1)

A2.6.VR-21K-1-CSO

CRM

GSO 7107-94

(MSO 0021:1998)

N 5117 until 31.05.2022

13/21K-1-CSO

1,010 g/dm3

+ 0,8 %

March

2025

February

2020

RM of fluoride-ions aqueous solution (2A-1)

A2.6.VR-2A-1-CSO

CRM

GSO 7188-95

(MSO 0090:1999)

N 5240 until 10.11.2022

34/2A-1-CSO

0,997 g/dm3

+ 0,8 %

September

2021

February

2020

RM of total alkalinity of water

A4.3.C-019-CSO

CRM

GSO 9285-2009

(MSO 1584:2009)

N 5896 until 10.04.2024

25/019-CSO

1000 mmol/dm3

+ 0,7 %

September

2021

February

2020

RM of ammonium ions aqueous solution (15K-1)

A2.6.VR-15K-1-CSO

CRM

GSO 7015-93

(MSO 0017:1998)

N 4535 until

17.07.2020

36/15K-1-CSO

1,009 g/dm3

+ 0,6 %

March

2023

February

2020

RM of 1,2-dichloroethane

A3.1.O-111-CSO

CRM

GSO 7332-96

(MSO 0107:1999)

N 5245 until

10.11.2022

16/111-CSO

99,95 %

+0,02 %*

March

2023

February

2020

RM of metals aqueous solution (Ti, Mo, Sb) RM-1

A2.6-VR-401-CSO

CRM

GSO 7324-96

(MSO 0093:1999)

N 5742 until 01.11.2023

7/RM-1-CSO

Ti - 0,197 g/dm3

Mo - 0,101 g/dm3

Sb - 0,099 g/dm3

+ 1,7 %

+ 1,7 %

+ 1,7 %

March

2025

February

2020

RM of magnesium ions aqueous solution (set N 20K)

A2.6.VR-20K-CSO

CRM

GSO 7190-95 ÷ 7192-95

(MSO 0085:1999)

N 5241 until 10.11.2022

18/20K-1-CSO

18/20K-2-CSO

18/20K-3-CSO

1,004 g/dm3

0,501 g/dm3

0,1013 g/dm3

+ 0,7 %

+ 0,7 %

+ 0,7 %

March

2024

February

2020

RM of magnesium ions aqueous solution (20K-1)

A2.6.VR-20K-1-CSO

CRM

GSO 7190-95

(MSO 0085:1999)

N 5241 until 10.11.2022

18/20K-1-CSO

1,004 g/dm3

+ 0,7 %

March

2024

February

2020

RM of oil content in water-soluble matrix NPVM-0,1

A.4.3.NPVM-034-0,1-CSO

RM

------

------

16/034-0,1-CSO

0,100** mg

+ 2,5 %

March

2023

February

2020

RM of oil content in water-soluble matrix NPVM-0,05

A.4.3.NPVM-034-0,05-CSO

RM

------

------

8/034-0,05-CSO

0,040** mg

+ 4,0 %

March

2023

January

2020

RM of total mineralization of water

A4.3.C-017-CSO

CRM

GSO 9283-2008

(MSO 1581:2009)

N 5745 until

01.11.2023

12/017-CSO

50 600 mg/dm3

50 300 mg/dm3

+ 0,8 %

+ 0,8 %

February

2025

January

2020

RM of nitrite-ions aqueous solutions (set N 7A)

A2.6.VR-7A-CSO

CRM

GSO 7021-93 ÷ 7022-93

(MSO 0027:1998)

N 4393 until

20.04.2020

34/7A-1-CSO

34/7A-2-CSO

1,017 g/dm3

0,499 g/dm3

+ 0,9 %

+ 0,9 %

February

2023

January

2020

RM of nitrite-ions aqueous solution (7A-1)

A2.6.VR-7A-1-CSO

CRM

GSO 7021-93

(MSO 0027:1998)

N 4393 until

20.04.2020

34/7A-1-CSO

1,017 g/dm3

+ 0,9 %

February

2023

January

2020

RM of sulfate-ions aqueous solution (41A)

A2.6.VR-41A-CSO

CRM

GSO 7437-98 (MSO 1126:2005)

N 5714 until

23.10.2023

19/41A-CSO

10,02 g/dm3

+ 0,6 %

February

2025

January

2020

RM of colour of aqueous solutions

(chromium-cobalt scale)

A4.3.C-306-CSO

CRM

GSO 7853-2000

(MSO 0254:2001)

N 4394 until 20.04.2020

63/306-CSO

501 degrees of colour

+ 1,5 %

February

2022

December

2019

RM of total phosphorus aqueous solution (9A-1)

A2.6.VR-9A-1-CSO

CRM

GSO 7241-96

(MSO 0092:1999)

N 5244 until 10.11.2022

14/9A-1-CSO

0,506 g/dm3

+ 2,0 %

January

2023

December

2019

RM of electrical conductivity of aqueous media

A9.3.C-UEP-4-CSO

CRM

GSO 7377-97

(MSO 1120:2005)

N 5201 until

09.08.2022

38/UEP-4-CSO

0,02943 Sm/m

+