The main detection methods for melamine include liquid chromatography, gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry, etc. Among them, liquid chromatography has the advantages of high sensitivity, accuracy, reliability, and low instrument cost, making it an ideal method for detecting melamine.

Dalian Yilite Analytical Instrument Co., Ltd. has conducted extensive experiments and provided you with a complete solution that complies with the national standard for testing melamine, including analytical methods and recommended instrument configurations.

Recommended configuration for San melamine detection liquid chromatography instrument

Serial Number	name	quantity
Equivalent efficiencyLiquid chromatography system
1	P3100 high-pressure constant current pump	1 unit
2	UV3100 UV Visible Detector	1 unit
3	Rheodyne 7725i high-pressure six way injection valve	1 piece
4	ZJ-1 valve bracket	1 piece
5	TD-1-15 gradient mixer (optional)	1 piece
6	W5100 Chromatographic Data Workstation	1 set
7	O3100 chromatographic column constant temperature box	1 unit
8	TP3100 solvent tray	1 unit
chromatographic column
9	Elite MSP C18san melamine specific column	1 unit
configuration(More features, user-friendly configuration, higher work efficiency)
10	DG3100 online deaerator	1 unit
11	S3100 automatic sampler	1 unit

San analysis method package for testing melamine

Serial number	name	Specification and model
1	citric acid	analytical pure
2	sodium octane sulfonate	HPLC
3	San melamine standard	CAS108-78-01, Purity ≥ 99.0%
4	Water based filter membrane (100 pieces/box)	φ50mm，0.45μm
5	Organic filter membrane (100 pieces/box)	φ50mm，0.45μm
6	Needle type organic phase filter (100 pieces/pack)	φ13mm，0.22μm
7	Mixed cation solid-phase extraction column (50 tubes/box)	HyperSep Retain-CX，60mg/3mL

Pre treatment configuration package for melamine testing

Serial Number	name	Specification and model
1	Ultrasonic water bath	AS3120 type, 3L, power: 120W
2	Diaphragm Vacuum Pump	Gm type
3	Solvent filter	1000mL
4	analytical balance	AL104， Sensitivity 0.0001g
		JD60-4,0.0001g
5	pH meter	FE20K acidity meter
		6010 acidity meter
6	centrifuge	TG16G， 16000 RPM, 6 × 50mL
		TD5G， 5000 RPM, 12 × 10mL
7	SPE	SPE-12
8	nitrogen concentration	PGC-01D
9	Vortexers	QL-861
10	mortar	90, alumina

performance index

Analysis speed	Analysis time<25 minutes
linear range	≥80µg/mL
detection limit	0.016mg/kg