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Geotech Mastehead

December 2020

Weathering the Storm

As the days grow shorter and colder temperatures settle-in, be mindful of equipment that can be damaged when exposed to freezing temperatures during use, storage, and transit.

YSI Professional Plus

Water Quality Instrumentation may include pH and ORP electrodes that can freeze if not stored at proper temperatures. If you plan to purchase or rent a pH or ORP electrode, Geotech suggests the following:

  • Request overnight shipment to minimize time-period exposure
  • Pack sensors with one or two hand warmers when shipping
  • Store sensors in temperatures above 32°F (0°C) by placing instrumentation inside the vehicle cab during transit or indoors when not in use

It's recommended to perform a visual inspection of electrodes if you suspect they have been exposed to cold temperatures. Symptoms of frozen electrodes include:

  • Shattered or cracked glass bulb
  • Reference junction protrusion
  • Cracked sensor body

Photoionization Detectors


SS Geosub on Sled

Electric Submersible and Bladder Pumps can contain residual groundwater after sampling. The expansion of water freezing inside pump housings can permanently damage rotors and motors, split bladders, and housings – resulting in project delays and costly repairs. Geotech recommends that you:

  • Disassemble and dry pumps at the end of each sampling day
  • Disassemble and drain residual water prior to shipping
  • Store pumps indoors when not in use or inside the vehicle during transit

Photoionization Detectors (PID) lamps can fog or condensate when taken from a warm environment to a cool outdoor project site. The result of condensation from rapid temperature changes can cause erroneous or unreliable VOC readings. Keeping the PID at a consistent temperature may keep your project moving along. Geotech recommends to:

  • Allow the PID instrument to equilibrate to ambient air temperature prior to powering On
  • Calibrate PIDs at least daily, then bump test the instrument periodically
  • If calibration fails, clean the sensor and lamp to remedy instrument sensitivity

If you suspect your equipment requires maintenance or repair, contact a Geotech representative at 800-833-7958 to schedule an equipment evaluation for service.


The famous YSI 556 multiparameter water quality instrument enhanced how the industry monitored ground and surface water for more than a decade. The end-of-life announcement came by surprise to many, but new and improved models maintain the dependability you've come to trust from the YSI brand.


Trade-In & Trade-Up

Until December 31st, 2020 – Geotech will responsibly recycle YSI 556 instruments traded-in and apply a credit when you trade-up to a newer YSI model. No matter the condition, turn it into something good for you and good for the planet.

Qualified trade-up instrumentation:

YSI ProDSSThe ProDSS is a rugged multiparameter instrument that offers a broad range of digital sensor configurations, rugged mil-spec connectors, and ergonomic handheld display.

YSI ProQuatro
YSI ProQuatroThe ProQuatro is an economical single or multiparameter water quality instrument that is configurable for common water quality monitoring projects.

YSI ProSwap
YSI ProSwapThe ProSwap is highly configurable by enabling users to easily swap one digital sensor for another. ProSwap can transform into whatever you need- ranging from purpose-built turbidity, optical DO, or profiling pH.

Can't trade it in? Recycle it.
As an environmentally responsible organization, Geotech will recycle your unwanted instrumentation at no-charge. Contact a Geotech Representative for additional information.


Geotech UAS News

Drone Flight Training Course
Hands-On & In-Person

Outdoor Flight Training

"I enrolled in the course in preparation for the Part 107 exam. Initially, I thought the value of this training was solely the exam prep. After taking the course, the value is the knowledge, hands on training, and confidence to operate a UAS in the field. Leptron closes the gap between faking your way through or knowing what you are doing and why."
-Nathan W.


Geotech developed a drone flight training program that has helped industry professionals introduce drone technology into their work flow. Whether you are interested in generating impressive marketing material or rendering high-resolution photogrammetry, Geotech's flight training course is right for your business.

Course Schedule:
January 11th – 15th, 2021

Included with the course:

  • Flight Training Certificate
  • Federal Aviation Association (FAA)
    Exam Scheduling
  • Practical Flight Instruction
  • Ground School Training
  • Training Binder
  • Mini-Indoor Drone Trainer
  • Lunch

For additional information contact 800-833-7958 or register at UAS Flight Training

Would you rather hire a professional drone pilot for your data collection? Hire Geotech! Contact a Geotech Representative to evaluate your Aerial Mapping or Photography project.

Enter the Geotech
Product Photo Competition!

Take a Picture

Win valuable prizes and have some fun taking
action shots of people using
Geotech brand equipment!
Take as many pictures as you like!
A $100 gift card will be awarded each month!
Winning photos will be published in
Geotech's monthly electronic newsletter
and on the web site.

What constitutes a winning photograph? We'll award points if your photo...

  • only shows Geotech equipment in use by real workers at real sites,
  • close-ups of the Geotech equipment,
  • equipment being used safely in observance of the health and safety procedures required
  • has companion photos showing as much of the site and surrounding area as possible (with site owner's permission, of course),
  • is well composed: nice framing, interesting background… extra points if the viewer can tell what type of project you were working on,
  • has an unusual twist or story: equipment being used overseas, of an interesting project, or for humanitarian purposes… wildlife or Mother Nature butting/intruding… the perfect shot at sunset, etc.
  • Digital photos only, in jpg or tiff formats, 2 MB or larger if possible.

Entering the competition is easy, go here to review the rules and guidelines and download the entry form. Every entry must be accompanied by a completed Geotech Photo Competition Entry Form.

Past Photo Competition Winners
July 2020July 2020 Winner

May 2020May 2020 Winner

March 2020March 2020 Winner

February 2020February 2020 Winner

December 2019December 2019 Winner

November 2019November 2019 Winner

September 2019September 2019 Winner

August 2019August 2019 Winner


Geotech traditionally attends dozens of national and international conferences and trade shows each year with
intentions to learn, collaborate, and educate the industries we serve. COVID-19 has vastly impacted this years' events forcing organizers to cancel or host through virtual forums. Geotech recently received notice that the
last two events remaining this calendar year have been canceled too. These announcements come with relief as everyone's health and safety is the highest priority.

With 2021 around the corner – we hope that many of our annual traditions will resume next year and make up for missed opportunities to personally connect with our industry partners and friends.

June 23-25, 2021
Geotech Annual Field Days

at Geotech's corporate headquarters
2650 East 40th Avenue
Denver, Colorado 80205

Mark Your Calendar

12th Annual Field Days

More Information


Geotech Sales & Service Locations
With Transit Zones

Geotech Sales & Service Locations

2650 East 40th Avenue
Denver, Colorado 80205
Phone: 1-800-833-7958
Local: 303-320-4764
Fax: 303-322-7242
E-mail: sales@geotechenv.com

4620 Northgate Boulevard, Suite 170
Sacramento, California 95834
Phone: 1-800-557-5325
Local: 916-922-2900
Fax: 303-322-7242

155 East Liberty Avenue, Suite A
Anaheim, California 92801
Phone: 1-800-295-5325
Local: 714-998-6788
Fax: 303-322-7242

12165 Metro Parkway, Unit 25B
Fort Myers, Florida 33966
Phone: 1-800-304-5325
Local: 239-476-8891
Fax: 303-322-7242

3125 Pine Tree Road, Suite 3D
Lansing, Michigan 48911
Phone: 1-800-275-5325
Local: 517-394-8328
Fax: 303-322-7242

2517 Noblin Road, Suite 103
Raleigh, North Carolina 27604
Phone: 1-800-293-5325
Local: 919-876-1535
Fax: 303-322-7242

1600 North Interstate 35e, Suite 114
Carrollton, Texas 75006-381
Phone: 1-800-276-5325
Local: 972-245-6575
Fax: 303-322-7242

25 Tigan Street, Suite 20
Winooski, Vermont 05404
Phone: 1-800-558-5325
Local: 802-651-3050
Fax: 303-322-7242

8910 122nd Avenue N.E.
Kirkland, Washington 98033
Phone: 1-800-314-5325
Local: 425-658-7300
Fax: 303-322-7242

C/Francesc Ferrer i Guàrdia Local 19
08100 Mollet del Vallés (Barcelona) Spain
Tel: 93 5445937
Fax: 93 5700535
E-mail: ventas@geotechenv.com


No. 12 Yumin Road, Yuanchenxin Bldg. E2, Suite 2406
Chaoyang District, Beijing, China 100029
Phone: 010-8225-1190
Local: 86-10-8225-1190
Fax: 86-10-8225-1957
E-mail: beijing@geotechenv.com


To contact Geotech:
Phone: 1-800-833-7958   E-mail: sales@geotechenv.com   Fax: 303-322-7242

Prices and promotions mentioned in this newsletter are valid through December 31, 2020.
Geotech is solely responsible for the content in this newsletter.
Some items may not be immediately available at the time you receive this newsletter, call for details.
© 2015-2020 Geotech Environmental Equipment, Inc.