Chromatography Lab analysis is charged per hour starting from instrument conditioning up to the analysis, and washing/cool down. The fees are inclusive of sample analysis and raw data (pdf/raw file) only. Standards, solvents, columns, and sample preparation consumables and reagents must be provided/shouldered by the client

The DLSU Spectroscopy Laboratory offers the following services:

• Particle Size Analysis
• Molecular Weight Analysis
• Zeta Potential Analysis

Analysis is charged per sample.  Each sample can be analyzed for up to 3 trials each, while sample replicates (in a separate container) and standards are charged as individual samples each. The fees are inclusive of sample analysis only. Reagents, standards, solvents, and sample preparation must be provided/shouldered/performed by the client. 

Zetasizer Nano Analysis Rates

	DLSU Chemistry Department	DLSP System Users	External Users (Academic Institutions)	External Users (Government Institutions)	External Users (Industry/ Commercial)
	1 HOUR RATE(PhP)	1 HOUR RATE(PhP)	1 HOUR RATE(PhP)	1 HOUR RATE(PhP)	1 HOUR RATE(PhP)
Particle Size Analysis	600	750	900	1,350	2,000
Zeta Potential Analysis	600	750	900	1,350	2,000
Molecular Weight Analysis	600	750	900	1,350	2,000
Additional Fees
Additional charges will be incurred upon the use of zeta potential cuvettes.

*Charge includes labor for experimental set-up, data processing, print-outs, and electronic data files.

*We require that papers for publication using the UV-Vis should acknowledge the DLSU Spectroscopy laboratory.

* DLSP system users refer to DLSU users outside the DLSU Chemistry Department including other schools within the DLSP system

1. Avoid gelation, a gel is unsuitable for measurement using the Zetasizer.
2. Ultrasonication can be used to remove air bubbles or to break up agglomerates in the sample. This must be applied carefully in order to avoid damaging the primary particles in the sample. Ultrasonication is sample-dependent. The CIF has ultrasonicator probe equipment. For more information, kindly check the CIF Sample Preparation Website page.
3. Dust contamination to samples usually happens, therefore great care is required in sample preparation. 
4. All glassware and apparatus used for sample preparation must be rigorously clean and free of scratches. 
5. Label the samples properly and wrap them securely to prevent them from spilling. Wrap light-sensitive samples in aluminum foil or place them in amber bottles. 
6. For samples requiring a specific temperature for storage, ensure to store them in iceboxes and label them with temperature requirements, and add a “fragile” mark when necessary.
7. Pack the samples carefully for transport to avoid spillage or breakage.
8. Submit the sample to DLSU for analysis. Please click here on instructions on how to submit the samples.

STEP 1. Send your inquiries to [email protected], indicate your name and institution. To serve you better, we request a conference/discussion with you to help you determine the appropriate experiments to achieve your objectives.

STEP 2. Once the discussion has been finalized, the Zetasizer Analysis Form will be sent out to the email address you used or you may download the form here. Kindly fill out the form completely with all the details (one form for EACH SAMPLE). INCOMPLETE FORMS WILL NOT BE PROCESSED. Carefully read the Terms and Conditions indicated on the sample analysis form. For questions regarding the form, send an email to  [email protected].

STEP 3. Prepare the samples. Ensure that the requirements for the preparation of samples for DLS analysis are met.

STEP 4. Submit the analysis form together with the sample. Alternatively, electronic submission of forms can be accommodated through email.

STEP 5. A confirmation email will be sent to you once the form(s) have been received and checked. A quotation will be sent to you depending on the number of samples.

STEP 6. Once the form has been received, a quotation will be sent to you based on the number of samples and analysis you indicated in the Zetasizer Analysis form.  Pay the corresponding fee to the following address:

Bank: Metrobank
Branch: LTI-Binan Laguna Branch
Account name: De La Salle University
Account # : 609-3-609-00167-7
 
You can pay in cash or cheque. 

Send the photo or scanned copy of the payment confirmation slip to [email protected] and copy [email protected].

 STEP 7. Once payment has been confirmed, you may send the samples via courier to the address below.

NOTE:  Samples will NOT BE PROCESSED  UNLESS COMPLETE PAYMENT IS DONE. 

Jessica Monterde
Central Instrumentation Facility Room 101
George S.K. Ty Advanced Instrumentation Bldg.
De La Salle University Laguna Campus
LTI Spine Rd. Bgys. Biñan and Malamig, Biñan, Laguna 402
   
STEP 8. Analyses results will be sent via email. Data and samples will be kept as stated in the analysis form.

Can I observe during the analysis?

Due to the current pandemic situation, laboratory visits are restricted.

Do you offer rush analysis?

Yes. Rush analysis is available for twice the published rate. Please contact us for rush analysis at spectroscopylab@dlsu.edu.ph.

Do you give the raw data after the analysis?

Yes. We can send the raw data (dts file) through your e-mail. This requires a Zetasizer Nano software to be processed. A free trial version is available for download. Please visit the Malvern Panalytical website for details:https://www.malvernpanalytical.com/en/support/product-support/software/Zetasizer-Nano-software-update-v3-30

Do you provide a formatted analysis report with registered chemist signatures?

Yes, we do at an ADDITIONAL FEE of Php 1,500.00 per sample.

What is the average turn-around time (TAT)  for  DLS analysis?

The turn-around time is 2 weeks, depending on the number of samples and the volume of job orders in the laboratory.

Do you accept purchase order  (PO), job order (JO), work order (WO) terms of payment?

NO, we do not accept PO, JO, or WO payment terms. At the moment, ONLY cash or cheque deposits are accepted.

Do you accommodate and test samples on weekends and holidays?

NO, we do not accept samples during weekends or holidays. Operating days are Monday to Friday (8:00 AM to 5:00 PM).

Your contact information is not working, is there an alternative email?

Contact us at these alternative emails: [email protected] or [email protected]

Zetasizer Analysis Form (doc)

Zetasizer Analysis Form (pdf)

DLSU Spectroscopy Laboratory
Central Instrumentation Facility
105 George S.K. Ty (GT) Building
De La Salle University Laguna Campus
Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Binan, Laguna

e-mail: [email protected]