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CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes

QuEChERS method and pre-mixes
Within a few years after its devleopment by Anastassiades et al. the QuEChERS method has gained a leading position for determination of pesticide residues in food by GC-MS or LC-MS allowing rapid and cheap clean-up of strong matrix-contaminated samples.
Standard clean-up of food samples
10 g sample are homogenised with 10 ml acetonitrile. After adding the internal standard the sample is shaken with 4 g MgSO4 and 1 g NaCI and afterwards centrifuged. 1 ml of the supernantant is spiked with 25 mg CHROMABOND® Diamino and 150 mg MgSO4 and shaken again. After centrifugation the supernatant is injected into the GC/MS.
Extraction mixtures for sample preparation for determination of pesticides in food samples.

MACHEREY-NAGEL offers a number of individually weighed and pre-mixed buffers and extraction mixtures, specially composed for different sample matrices.
Mix I and Mix II are extraction mixtures, Mix III to Mix VI are clean-up mixtures.

The food samples will be extracted with either Mix I or Mix II.
Afterwards they will be purified with one of the following mixtures:

  • Mix III (samples with low fat content; e.g. apples, strawberries),
  • Mix IV (moderate content of chlorophyll and carotinoids; e. g. carrots, lettuce),
  • Mix V (high content of chlorophyll and carotinoids; e. g. bell peppers, spinach),
  • Mix VI (high fat content; e. g. avocados).

Every mix is prepacked in a 15 ml centrifuge tube. Pack of 50 pieces.

CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes

CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes



Macherey-Nagel CHROMABOND QuEChERS Mix VI 730974
PART NO.4AJ-4003828
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix VI Diamino/C18 ec Clean-up Mix||15||0.15g CHROMABOND® Diamino
with 0.9g MgSO4 and 150mg C18 ec||50
Macherey-Nagel
730974

SPE phases

0
2
5
1
Price: £78.11
Out of Stock
Macherey-Nagel CHROMABOND QuEChERS Mix IV 730973
PART NO.4AJ-4003827
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix IV Diamino/Carbon Clean-up Mix||15||0.15g CHROMABOND® Diamino
with 0.9g MgSO4 and 15mg Carbon||50
Macherey-Nagel
730973

SPE phases

0
2
3
1
Price: £120.60
Out of Stock
Macherey-Nagel CHROMABOND QuEChERS Mix III 730972
PART NO.4AJ-4003826
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix III Diamino Clean-up Mix||15||0.15g CHROMABOND® Diamino
with 0.9g MgSO4||50
Macherey-Nagel
730972

SPE phases

0
1
2
1
Price: £78.11
Out of Stock
Macherey-Nagel CHROMABOND QuEChERS Mix II MgSO4-Extrac 730971
PART NO.4AJ-4003825
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix II Acetat-Extraction-Mix||15||6g MgSO4, 1.5g Na acetate||50
Macherey-Nagel
730971

SPE phases

0
3
1
1
Price: £113.14
Out of Stock
Macherey-Nagel CHROMABOND QuEChERS Mix I Citrate 730970
PART NO.4AJ-4003824
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix I Citrat-Extraction-Mix||15||4g MgSO4, 1g NaCl, 0.5g Na2H citrate
1.5 H2O, 1g Na3 citrate, 2 H2O||50
Macherey-Nagel
730970

SPE phases

0
2
0
1
Price: £113.14
Out of Stock
Macherey-Nagel CHROMABOND QuEChERS Mix V 730975
PART NO.4AJ-4003829
76949||77873||76883||78065
Description||Volume ml||Composition||PK
Mix V Diamino/Carbon Clean-up Mix||15||0.15g CHROMABOND® Diamino
with 0.9g MgSO4and 45mg Carbon||50
Macherey-Nagel
730975

SPE phases

0
3
4
1
Price: £120.60
Out of Stock


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