Laboratory dishes for laboratories: types, materials, choice and features

Krympress reports:

Laboratory dishes for laboratories — This is an extensive category of products used in scientific, medical, educational and industrial laboratories for analyzes, experiments, storage, mixing and measuring various substances. The quality and correct selection of dishes directly affects the accuracy of research results and laboratory safety.

What is laboratory dishes

Laboratory dishes include a variety of products, both standard and specialized, used in chemistry, biology, pharmaceuticals, medicine and other industries. Depending on the purpose, the dishes can be:

• measured — used to accurately measure the volume of liquids (menzurks, cylinders, buretors);
• reactionary — is used during reactions (test tubes, flasks, glasses);
• Keeping — intended for temporary or long -term storage of substances (banks, bottles);
• dividing — helps in the components of the components of the mixtures (dividing funnels, filtration funnels).

Also, laboratory containers include glass sticks, Petri cups, spatulas, corks and various connecting elements.

Features and requirements for laboratory utensils

Accuracy and quality of manufacture

Since laboratory studies require high accuracy, the dishes should be:

• geometrically correct shape;
• have a graduation (if required);
• be resistant to aggressive substances and temperature differences.

Certification and standards

All laboratory dishes must comply with the current standards:

• GOST (in Russia) — determines the size, materials, tolerances and marking;
• ISO — international standards used for products used in laboratories;
• FDA, CE — If the dishes are imported and is used, for example, in medical diagnostics.

The availability of certificates when using dishes in medicine, pharmaceuticals and food industry is especially important.

Chemical and thermal resistance

Materials should be inert in relation to reagents. To work with acids and alkalis, glass with increased resistance is used, and for heating — heat -resistant brands, for example, borosilicate glass.

The main types of laboratory utensils

Test tubes

• Straight or conical;
• With a flat or rounded bottom;
• Can be with or without divisions;
• Used for storage, heating and conducting reactions.

KOBE

• Conical (Erlenmeyer) — suitable for mixing liquids;
• Pear -shaped — used in organic synthesis;
• Round -end — used for heating;
• Measured — for accurate measurement of volume.

Glasses

• Different volumes — from 50 ml to 1000 ml;
• With a nose for the convenience of transfusion;
• Used for dissolution, heating, storage.

Burette and pipettes

• Designed for the dosed addition of liquids;
• Glass or plastic;
• Options with graduation or automatic feed.

The cylinders are measured

• Have an exact scale;
• There are glass and plastic;
• Used to measure volumes.

Funnels

• Filtration — for filtering substances;
• Dividing — for separation of non -laughing liquids;
• Powers — for falling asleep dry substances.

Materials of manufacture

Laboratory dishes are made from different materials depending on the purpose of use:

Glass

• Borosilicate (for example, Pyrex) — resistant to thermal and chemical influences;
• Quartz glass — withstands extremely high temperatures;
• Lead glass is rarely used, but provides high transparency.

Plastic

• Polypropylene (pp) — light, durable, resistant to most acids and alkalis;
• Polyethylene (PE) — is used mainly for storage;
• Polyoximethyla (POM) and PTFE — resistant to aggressive reagents;
• Polycarbonate (PC) — for strong and shock -resistant dishes.

Porcelain and ceramics

• Used for crucibles, stuples, cups for evaporation;
• Resistant to high temperatures;
• Do not react with most substances.

Metal

• Stainless steel, platinum, nickel — are used at high temperatures and aggressive media.

How to choose laboratory utensils: Practical tips

The choice of laboratory dishes depends on several factors:

Appointment

• For accurate measurements, select certified measuring flasks and buretors;
• For working with acids — dishes made of chemically persistent glass or PTFE;
• For storage — plastic containers with hermetic lids.

terms of Use

• If necessary, heating — only heat -resistant glass or porcelain;
• With frequent transportation — plastic dishes that are resistant to impacts;
• If necessary, autoclaving — products with “Autoclavable” labeling.

Budget and service life

• Glass dishes are more expensive, but more durable;
• Plastic — cheaper and lighter, but wears out faster;
• Consider the need for regular replacement.

Manufacturer and certification

• Preference should be given to proven brands: Duran, Pyrex, Vitlab, Hirschmann, Eppendorf;
• Be sure to have certificates of quality and passport of the product.

Where to purchase laboratory utensils

You can purchase laboratory dishes from specialized suppliers:

Online stores and marketplaces

• Convenient in a wide choice;
• It is important to check the availability of licenses, certificates and the reputation of the seller;
• Suitable for small and medium purchases.

Official dealers of manufacturers

• Guarantee of originality of products;
• The ability to get advice and documentation;
• Wholesale discounts are often available.

Laboratory equipment display companies

• A full range — from dishes to complex devices;
• Service;
• Purchases by tenders and contracts.

Laboratory dishes, experts say, are not just auxiliary equipment, but an important tool that provides accuracy, safety and effectiveness of laboratory research. Approaching the choice, taking into account the type of tasks, operating conditions and quality requirements, you can create a reliable and convenient laboratory environment. And timely update and proper care of dishes will help maintain a high level of research over the years.

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