Central Analytical Services Laboratory

The Central Analytical Services Laboratory (CASL) handles routine chemical analyses for food and feeds, plants, fertilizers and soils, water and wastewater, and biotechnology research products. CASL also tests, modifies, and standardizes analytical methods and develops new analytical techniques. The laboratory is currently PNS ISO/IEC 17025:2017 accredited in the field of chemical testing, and was the first PNS ISO/IEC 17025:2005 accredited chemical analysis laboratory in UPLB. CASL accepts requests for analytical services from various institutions within and outside UPLB. The CASL provides public services for the following chemical testing parameters:

CASL Services and Indicative Rates

Food and Feed Analysis

Proximate Analysis (Complete)

Test or Procedure	Sample Size	Fee (Php)
Sample Preparation (drying/grinding)	250-500g (fresh)	520
Moisture	10g / 250-500mL	321
Ash	10g / 250-500mL	387
Crude Fat (Soxtec)	5g	847
Crude Fiber	5g	847
Crude Protein	5g /10mL	629

Sugar Analysis

Test or Procedure	Sample Size	Fee (Php)
Sugar Extraction		520
Reducing Sugars (DNS Method)	5g / 10mL	726
Total Sugars (Phenol-Sulfuric Method)	5g / 10mL	726

Mineral Analysis

Test or Procedure	Sample Size	Fee (Php)
Sample Preparation at 550°C	20g / 250-500mL	520
Total Phosphorus (Colorimetric)	20g / 250-500mL	593
Minerals: Ca, Mg, Na, K, Mn (AAS)	20g / 250-500mL	653 per mineral/metal/nutrient
Sample Preparation at 450°C	50g / 250-500mL	520
Minerals/Heavy Metals: Cu, Fe, Zn, Cr, Ni, Co, Pb, Cd (AAS)	50g / 250-500mL	653 per mineral/metal/nutrient
Titratable Acidity	20g / 50-100mL	330
% Salt (as NaCl)	10g	690

Fats and Oil

Test or Procedure	Sample Size	Fee (Php)
Specific Gravity	75mL	266
Saponification Number	10g / 10mL	726
Peroxide Value	20g / 20mL	605
Free Fatty Acid	50g / 50mL	520
Free Fatty Acid Profile (GC)	5g / 5mL	3957

Instrumental Analysis

Gas Chromatographic Analysis

Sample Preparation	Sample Size	Fee (Php)
Ethanol	10mL	454
Methanol	10mL	968

Compositional Analysis

Sample Preparation	Sample Size	Fee (Php)
Moisture	5-10g	354
Ash	5-10g	426
Extractives	30-50g	2,662
Holocellulose	4g	1,997
Hemicellulose and/or α-Cellulose	4g	2,662
Acid Soluble Lignin	2g	1,441
Acid Insoluble Lignin	2g	1,441

Soil Analysis

Sample Preparation	Sample Size	Fee (Php)
Sample Preparation (Homogenization)		121
Moisture	10g	333
pH (in water)	20g	121
Total Kjeldahl Nitrogen	20g	629
Sample Preparation (Extraction)	20g	520
Exchangeable Cations: Ca, Mg, Na, K (AAS)	20g	653 per mineral/metal/nutrient
Micronutrients: Fe, Cu, Mn, Zn (AAS)	20g	653 per mineral/metal/nutrient

Fertilizer Analysis

Sample Preparation	Sample Size	Fee (Php)
Nitrogen (N)	5g / 1-2mL	629
Sample Preparation at 550°C	20g / 250-500mL	520
Phosphorus (P)	20g /250-50	593
Potassium (K)	20g /250-50	653
Minerals: Ca, Mg, Na, K, Mn (AAS)	20g / 250-500mL	653 per mineral/metal/nutrient
Sample Preparation at 450°C	50g / 250-500mL	520
Minerals/Heavy Metals: Cu, Fe, Zn, Cr, Ni, Co, Pb, Cd (AAS)	50g / 250-500mL	653 per mineral/metal/nutrient

Water Analysis

Test or Procedure	Sample Size	Fee (Php)
pH	50mL	121
Absorbance	50mL	176
Color	50mL	908
Conductivity	50mL	145
COD	50mL	1,755
BOD	200mL (heavy colored) / 4L (clear)	1,755
Total Solids	1L	545
TSS	250mL	545
Oil and Grease	2.5L (in glass bottle)	859
Ammonium-N	50mL	871
Nitrate-N	50mL	653
Orthophosphates	100mL	653
Total P	100mL	1,162
Hardness	100mL	629
Alkalinity	100mL	472
Acidity	50mL	472
Turbidity	50mL	145
Chlorides	250mL	799
Sample Preparation	2L	666
Minerals/Heavy Metals: Ca, Mg, Na, K	2L	653 per mineral/metal/nutrient
Minerals/Heavy Metals: Mn, Cu, Fe, Zn, Pb, Cd (AAS)	2L	653 per mineral/metal/nutrient

Jeffrey P. Tamayo, PhD

University Researcher II

Program Leader

Lorenzo M. Fabro, Jr., MSc

University Researcher II

Ma. Xenia B. Sapin

Laboratory Technician III

Veejay A. Anarna

Laboratory Technician III