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Laboratory Assistant Jobs in Riverside, CA (NOW HIRING)

Onterris

Laboratory Assistant - Metals

Orange, CA · On-site

$17.25 - $20/hr

A Day in the Life As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory , you'll step into the lab where every detail matters. You'll play a key role in supporting the Metals ...

Onterris

Laboratory Assistant - Wet Chemistry

Orange, CA · On-site

$17.25 - $20/hr

A Day in the Life As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory , you'll step into the lab where every detail matters. You'll play a key role in prepping and handling samples ...

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Showing results 21-40

All JobsLaboratory JobsLaboratory Assistant JobsLaboratory Assistant Jobs in Riverside, CA

Laboratory Assistant information

See Riverside, CA salary details

$10

$21

$31

How much do laboratory assistant jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for laboratory assistant in Riverside, CA is $21.12, according to ZipRecruiter salary data. Most workers in this role earn between $17.31 and $24.09 per hour, depending on experience, location, and employer.

What is a laboratory assistant?

Laboratory assistants are professionals who support scientists, researchers, and lab technicians by performing routine tasks in laboratories. Their duties often include preparing and cleaning lab equipment, collecting and labeling samples, conducting basic experiments, and maintaining accurate records of their work. They play a crucial role in ensuring that laboratories run smoothly and efficiently, and their work helps facilitate scientific research and development. Laboratory assistants may work in a variety of settings, including hospitals, research institutions, and educational facilities.

What are some common challenges laboratory assistants face in maintaining accuracy and safety in their daily tasks?

Laboratory Assistants often encounter challenges such as managing multiple samples simultaneously while adhering to strict protocols for accuracy and contamination prevention. Ensuring proper labeling, handling hazardous materials safely, and maintaining detailed records are essential responsibilities that require attention to detail and strong time management skills. Collaboration with scientists and technicians is also important, as clear communication helps prevent errors and promotes a safe, efficient work environment. Staying up-to-date on safety procedures and laboratory best practices is key to overcoming these challenges.

What are the key skills and qualifications needed to thrive as a laboratory assistant, and why are they important?

To thrive as a Laboratory Assistant, you need a solid understanding of laboratory procedures, sample handling, and safety protocols, usually supported by a relevant science degree or certification. Familiarity with laboratory information management systems (LIMS), basic laboratory equipment, and safety certifications such as OSHA are typically required. Attention to detail, organization, and effective communication are crucial soft skills for maintaining accuracy and collaborating with team members. These abilities ensure reliable results, uphold safety standards, and support the overall efficiency and integrity of laboratory operations.

What is the difference between Laboratory Assistant vs Laboratory Technician?

AspectLaboratory AssistantLaboratory Technician
Required CredentialsHigh school diploma or equivalent; some roles may require certificationPost-secondary education, often a diploma or associate degree in laboratory technology
Work EnvironmentHospitals, clinics, research labs, educational institutionsMedical labs, research facilities, industrial laboratories
Job ResponsibilitiesAssisting with sample collection, preparing specimens, cleaning equipmentPerforming tests, analyzing samples, maintaining lab equipment
Common UsageOften entry-level, supporting technical staffMore technical, with independent testing responsibilities

Laboratory Assistants typically support laboratory operations with basic tasks and require minimal formal education. Laboratory Technicians perform more complex testing and analysis, often needing specialized training or certification. Both roles are essential in lab settings, but Laboratory Technicians usually have a higher level of technical responsibility.

Do you need qualifications to be a laboratory assistant?

Laboratory assistants typically need a high school diploma or equivalent, and some positions may require post-secondary education or certifications in laboratory techniques or related fields. Relevant skills include attention to detail, familiarity with laboratory equipment, and basic knowledge of safety procedures.

How do you become a laboratory assistant?

To become a laboratory assistant, candidates typically need a high school diploma or equivalent, along with relevant laboratory or scientific coursework. Some positions require post-secondary education or certifications in laboratory techniques, and strong attention to detail, organizational skills, and familiarity with lab equipment are important for success.

How much does a laboratory assistant get paid?

The average salary for a laboratory assistant varies by location and experience but typically ranges from $25,000 to $45,000 per year. Entry-level positions may start lower, while those with specialized skills or certifications can earn higher wages, often working in clinical, research, or industrial labs.

What are the most commonly searched types of Laboratory jobs in Riverside, CA?

The most popular types of Laboratory jobs in Riverside, CA are:

What are popular job titles related to Laboratory Assistant jobs in Riverside, CA?

For Laboratory Assistant jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Laboratory Assistant jobs in Riverside, CA look for?

The top searched job categories for Laboratory Assistant jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Laboratory Assistant jobs?

Cities near Riverside, CA with the most Laboratory Assistant job openings:

Laboratory Assistant jobs near you
Infographic showing various Laboratory Assistant job openings in Riverside, CA as of September 2026, with employment types broken down into 2% As Needed, 73% Full Time, 20% Part Time, 2% Temporary, and 3% Contract. Highlights an 100% In-person job distribution, with an average salary of $43,935 per year, or $21.1 per hour.

Laboratory Assistant - Metals

Orange, CA • On-site

Montrose Environmental Group, Inc.
Environmental Consulting Services • 1 - 5K employees
Learn more about Montrose Environmental Group, Inc.external

$17.25 - $20/hr

Full-time

Posted 16 days ago

Montrose Environmental Group rating

6.7

Company rating: 6.7 out of 10

Based on 12 frontline employees who took The Breakroom Quiz

Job description

About Us
At Onterris, we build careers grounded in purpose, responsibility and real-world impact.
"For Planet and Progress" is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.
When you join us, you're not just forging a career, you're joining a movement. A movement for better thinking, smarter solutions and lasting impact.
Together, we will advance our way of life and protect the integrity of our environment every step of the way.
Job Description
A Day in the Life
As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory, you'll step into the lab where every detail matters. You'll play a key role in supporting the Metals Department by assisting with disposal, cleaning glassware, handling samples, maintaining equipment, and maintaining a clean laboratory to support on-time results everyday. You'll collaborate with a strong team of committed professionals, contribute to meaningful scientific work, and grow your expertise in a dynamic, quality-driven environment.
The compensation range for this role is $17.25 to $20 per hour, commensurate with experience, skills, and geographic location.
Department: Metals
Schedule: Full-Time. Monday - Friday, 8:30 AM - 5:00 PM
To thrive in this role in the Metals Department, you'll be comfortable taking ownership of the following responsibilities:
  • Pick up, check in/out, retrieve, return, and organize samples; assist with sample weighing
  • Maintain clean and organized workstations, counters, floors, and glassware
  • Dispose of samples, instrument waste, and satellite waste safely
  • Monitor, receive, label, and store supplies; notify when inventory is low
  • Perform routine equipment maintenance and calibration (hot blocks, pipettes, balances, pH/turbidity meters, etc.)
  • Handle and replace gas cylinders safely
  • Perform pH and turbidity checks
  • Handling the pre-treatment and accurately weigh samples for laboratory analysis
  • Use LIMS for daily tasks and maintain logbooks
  • Follow all safety, PPE, and QA requirements
  • Stay current with required QA
  • Communicate and coordinate with QA, Safety members, Sample Receiving, and Group Leader
  • Comply with Onterris Quality Assurance Program and other policies
  • Comply with Onterris Health and Safety Plan
  • Other duties as assigned by the Group Leader, Operations Manager, or Lab Director

Your Expertise and Skills
These requirements reflect the knowledge, skills and abilities that help you do your best work here.
  • High School diploma or equivalent required
  • Ability to follow written procedures and instructions
  • Basic understanding of laboratory safety practices
  • Strong communication and teamwork

Preferred Skills
  • Prior laboratory, sample-handling, or wet chemistry experience
  • Strong attention to detail and organizational skills
  • Ability to work effectively under supervision in a team-based environment
  • Willingness to learn laboratory procedures and workflows

Work Environment & Physical Requirements
The physical and environmental requirements below reflect what's typically needed to perform the essential functions of this role safely and effectively. We may provide reasonable accommodations to qualified individuals with disabilities, consistent with applicable law, to support performance of the essential functions.
  • Works in a laboratory and/or office environment
  • Sitting, standing, and walking
  • Must be able to work in a stationary position for entire shift duration
  • Lifting and moving up to 50 lbs, including pushing/pulling
  • Must be comfortable working with strong acids and solvents

#LI-SG1
#INDONT
Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients' resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com.
We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.

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