Member of

Bitystar.gif (1026 bytes)Bitystar.gif (1026 bytes)Bitystar.gif (1026 bytes)

Twiss Analytical Laboratories

26276 Twelve Trees Lane, Suite C, Poulsbo, Washington  98370
Monday - Friday  8:00am to 5:00pm

Forms    Contact Us     Search     Home

Analytical and

(360) 779-5141 voice
(360) 779-5150 fax
CAGE code: 03GU8

CCR Registered

Customer Service

Working for a  cleaner safer better world


Home Info
About Us
Sampling Instructions

Courier Service

Driving Directions



Proud member of:

Poulsbo Chamber of Commerce





We gladly accept:


Visa Credit Card






Twiss Analytical Labs

Washington State Accredited Drinking Water & Environmental Laboratory

Providing excellence in laboratory analysis since 1990

  Twiss Analytical Laboratories offers a full range of analytical services:

  • Business

  • Government Agencies

  • Homeowners

   Our Services Include:

  • Drinking water analysis

  • Environmental analysis for monitoring and compliance
  • Agricultural soil fertility testing
  • Hazardous waste designation testing
  • Courier pick-up and delivery

Services for Business
Our rapid response and quick turnaround time will maximize your business productivity:

  • Drinking water testing to comply with state and local health regulations
  • Environmental testing to meet permit requirements
  • Process control and quality control testing
  • Competitive Pricing
  • Courier pick up of samples and delivery of supplies is available by prior arrangement, at no charge.

Services for Government Agencies
Our accredited laboratory provides timely, accurate results for your regulatory requirements:

  • Competitive Pricing
  • Rapid response to emergent events
  • Reports in Excel formats for electronic deliverables
  • Convenient access throughout western Washington
  • Knowledgeable staff available to answer your technical questions

Services for Homeowners
Twiss Analytical Laboratories provides a wide variety of services for the homeowner designed to ensure your peace of mind, protect your family's health and help you become more environmentally knowledgeable and responsible.

  • Competitive pricing
  • Quick turnaround time
  • Soil fertility testing for your lawn and garden
  • Drinking water analysis
  • Technical consultation
  • Assisting your own efforts in environmental responsibility



Soil Testing for
Healthy Plants

Are your plants getting the nutrition they need?
Don't guess.  Have your soil tested.
Soil testing provides results that allow you to apply treatments to your soil without overdoing any one amendment.
Good environmental stewardship results from applying only the amount and type of nutrients you need.

Whether you are beginning from scratch or have an existing landscape, are raising vegetables or  maintaining a pasture, soil testing makes sense.

Call or email us.


Check out our
Soil Fertility Testing Brochure

Washington State
Department of Ecology


Department of Health
Washington State
Department of Health

This site hosted by Shaver & Shaver Unlimited
Send mail to with questions or comments about this web site.
Last modified: July 12, 2009

Copyright´┐Ż 2001 Twiss Analytical Laboratories