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Laboratory Soil Analysis. Female scientist in white coat measuring PH of soil sample with litmus strips. Agrochemical examination of soil.

Technician's hand with green protective glove holding test tube with clear liquid and using universal indicator paper to measure pH of the solution by dipping the pH paper into a solution and observing the change in color of the paper in chemical laboratory.

Neutral pH of water, test water with litmus paper

A persons hands taking a COVID-19 / Coronavirus home testing kit, meant to speed up results and prevent exposure and spread among infected individuals.

Hand picking pest control file record in black binder folder. Pest management in company concept.

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Pistol's bullet shells and yellow number 3 round paper sign on floor, concept for keeping physical evidences of the use of pistols, guns and bullet shells at the point of the murder.

Hong Kong - March 14, 2022 : Chinese Medicine Lianhua Qingwen capsule and COVID-19 Rapid Antigen Test for sale on a street market in Wan Chai, Hong Kong. Lianhua Qingwen capsule is a drug to treat COVID-19.

Pharmaceutical scientist working in an aspeptic or sterile or clean room

universal indicator paper, Litmus Paper of ph Value Measurement, laboratory inspection equipment

Blood sample of patient positive tested for giardiasis by rapid diagnostic test.

Scientist pours substunce into testing kit by syringe

Expert examines a bullet at the crime scene

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the scientist measures the level of radiation against the background of the sign of radiation hazard with the help of a dosimeter

Senior forensic scientist working in laboratory

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Litmus paper shows acidity, chemical analysis. Indicator for determining reaction medium. Strips and scraps filter paper tape. Most accurate measurement results. Use litmus paper in various fields

Woman holding the pH test and showing a strip with the color orange that is related to pH 4.0

Disaster Preparation Kit Flatlay with Items on Gray Table

Close-up of an old device for drawing and measuring geometric angles. The mechanism of the drawing board of the T-square.

Closeup chemical ingredient with chemical formula K2CrO4 on white laboratory table. Potassium Chromate powder in test tube.

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Biochemistry laboratory research, Scientist in lab coat and protective workwear holding test tube filled with clear solution and using strip of pH paper to test pH of the solution at the laboratory.

Cholesterol level is shown using a text and formula

Criminalistic Laboratory, Bullet shell analysis, rule of ballistic measurement, conceptual image

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Chemical Spill kit yellow bucket and Biohazard Spill Kit with Warning danger caution hazard tag sign or symbol for emergency response situation when the chemical spill out, safety first in laboratory.

Scientists are researching and analyzing harmful contaminants in the laboratory.

Free Images: "bestof:Tools for Testing Arson Samples (14629943352).jpg Shown here are the tools for testing arson samples using NIST's new PLOT capillary method Clockwise from top"

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