FAQs - Frequently asked questions

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Pre-analytics // Venous blood collection

S-Monovettes

Are there blood collection tubes / S-Monovettes with particularly small volumes for venous blood collection?

Does the age of the S-Monovette® affect the filling volume?

How is the S-Monovette® certified?

Is there an expiration date for each S-Monovette® and if so, where can it be found?

What material is the membranes of the screw cap made from and why is it lower down?

How are the S-Monovettes packed?

What material is the S-Monovette® made from?

What storage conditions are recommended for S-Monovettes before blood collection?

Does the S-Monovette® meet the IATA guidelines on shipping samples using air freight?

Is there an S-Monovette® without preparation?

Why does the S-Monovette® have a screw cap?

Why should an S-Monovette® Citrate be filled up to the nominal marking, taking into account a maximum deviation of the filling volume of ± 10%.

How does haemolysis occur?

Why is haemolysis particularly significant?

How can I prevent haemolysis?

What influencing factors are there during blood collection?

What role does the time of blood collection play?

Does the position of the patient matter?

What can I do if the vein conditions are poor?

Which blood collection technique is recommended for successful blood sampling in unknown or critical venous conditions?

How can I minimise the risk of needlestick injuries during blood collection?

How can I positively influence the sample quality of a blood sample?

Which S-Monovette® is recommended for the determination of homocysteine?

Which S-Monovette® is recommended for thrombocyte function diagnostics?

Can the S-Monovette® CTAD be used for routine clotting diagnostics?

Can an anticoagulant (EDTA, citrate or heparin)-induced pseudothrombocytopenia be determined using the S-Monovette® ThromboExact?

Which S-Monovette® can be used to determine heavy metals?

Which S-Monovette® is recommended for oGTTs?

What is the shelf life of S-Monovette® Lithium-Heparin?

What is the shelf life of S-Monovette® Serum?

Can heavy metals be determined from the S-Monovette® Serum or S-Monovette® Lithium Heparin?

Why do the S-Monovette® Serum and the S-Monovette® Lithium Heparin contain plastic beads?

What should be taken into account when centrifuging S-Monovettes with gel?

What material is the gel made from?

Is it possible to re-centrifuge an S-Monovette® with gel?

How quickly can the S-Monovette® Serum/Serum Gel be centrifuged after the blood is collected?

When should an S-Monovette® with gel be used?

How long does the S-Monovette® EDTA last?

Does the S-Monovette® EDTA have to be mixed?

What is K3 EDTA?

What is the shelf life of S-Monovette® Citrate (> 2 ml)?

Does the S-Monovette® Citrate have to be mixed after the blood has been collected?

What is the recommended centrifugation for the S-Monovette® Citrate?

How is the S-Monovette® Citrate prepared?

What is the shelf life of the S-Monovette® Fluoride EDTA ("Glucose”)?

What is the difference between the S-Monovette® Fluoride EDTA / Fluoride Heparin ("Glucose") and the S-Monovette® GlucoEXACT?

How is the S-Monovette® GlucoEXACT prepared?

What needs to be taken into account when collecting blood using the Safety-Multifly® needle?

What is recommended for patients with anticoagulant-induced pseudothrombocytopenia?

Can platelets be activated unintentionally during blood collection? If so, how can this effect be reduced?

Where can I find more information on pre-analytics?

What is the difference between a centrifuge with a fixed-angle rotor and a centrifuge with a swing-out rotor?

What is the difference between the centrifugation data centrifugal g-force and RPM?

Can I centrifuge S-Monovettes of different preparations together?

Can I also use the SARSTEDT cannula with tubes from other manufacturers?

Is it correct that less plastic is used for the S-Monovette® than for a vacuum tube?

Needles and adapters

Should the S-Monovette® needles be bent before puncture in order to achieve a flat injection angle?

Are there special needles for collecting blood from infants?

Which needles should be used to collect blood for the determination of heavy metals?

How are the needle systems for the S-Monovette® packed?

Do the needle systems for the S-Monovette® contain nickel?

Do the needle systems for the S-Monovette® contain latex?

Can the Safety-Multifly® Needle be used for short-term infusions?

Why are there various tube lengths for the Safety-Multifly® Needle?

Can I also use the SARSTEDT cannula with tubes from other manufacturers?

Pre-analytics // Capillary blood collection

Tubes

Which capillary system can be used to determine ESR?

Can the Microvette® also be used for venous blood collection?

What centrifugation conditions must be taken into account for the Microvette® and Multivette® with lithium heparin, fluoride and EDTA?

What centrifugation conditions must be taken into account for the Microvette® and Multivette® with serum gel and lithium heparin gel preparations?

Which centrifugation conditions must be taken into account for the Microvette® and Multivette® with serum preparation?

Does the Microvette® have an expiry date and, if yes, where can it be found?

Which drawing techniques can be used to collect capillary blood with the Microvette®?

Can the Microvette® be completely processed in automated analysers?

Why are there Microvettes with conical and cylindrical inner tubes?

Why is there no Microvette® with a citrate preparation for coagulation?

In what order should capillary blood draws be taken?

Is the Multivette® suitable for venous or capillary blood collection?

Why does the Multivette® have two marks, and which one is the filling level mark?

When should the Minivette® POCT be used?

Lancets

Why should an incision lancet be used on newborn and premature babies?

What is the difference between the Safety Lancet and the Incision Lancet?

Can the Safety Lancet be used more than once?

How do the individual Safety Lancets differ from one another?

Which sites on the body do we recommend for a puncture?

Are Safety and Incision Lancets sterile?

Are the lancets latex-free?

Pre-analytics // Urine collection

Urine Monovettes

Why does the Urine Monovette® with boric acid not have a scale?

Is the V-Monovette® Urine transfer unit sterile?

Is the Urine Monovette® sterile?

What material is the Urine Monovette® tube made from?

Which Urine Monovette® is suitable for use with test strips?

How is the Urine Monovette® with boric acid prepared?

Does the boric acid in the Urine Monovette® also stabilise urine sediment?

What is the difference between Urine Monovettes with a yellow or green screw cap?

Can the Urine Monovette® with boric acid be used for clinical chemistry tests?

How should the Urine Monovette® be centrifuged for sedimentation?

What is the minimum acceptable filling volume for the Urine Monovette® with boric acid?

For how long does the Urine Monovette® with boric acid stabilise microorganisms after filling the tube?

Is the filled Urine Monovette® suitable for transport?

What is mid-stream urine?

What type of analyses require mid-stream urine?

Urine cups

Can urine from a urine cup be used to analyse trace elements and metals?

Urine collection containers

What should be considered when collecting 24-hour urine?

Why is 24-hour urine collected?

Are the collection containers resistant to acids and alkalis?

Which stabiliser is used in the UriSet 24?

What is stabilised in the UriSet 24 with hydrochloric acid and for how long?

What is the purpose of the clear strip on the 3 litre urine container?

Can urine from a urine collection containers be used to analyse trace elements and metals?

What is mid-stream urine?

What type of analyses require mid-stream urine?

Pre-analytics // Stool collection

Are the faeces tubes sterile?

Are there faeces tubes available to standardise sample sizes?

How much faeces should the tube be filled with for normal faeces diagnostics?

Which tube can be recommended for pathology?

What material are faeces tubes made from?

Is it possible to freeze faeces tubes?

Pre-analytics // Blood gas sampling

Is it possible to connect Safety-Needles/Safety-Multifly® needles to the Blood Gas Monovette®, which has a Luer connection, and collect blood?

How long after blood collection can a blood gas analysis (BGA) be carried out on a blood sample which has not been chilled?

Can the Blood Gas Monovette® be shaken well or inverted to ensure that it is mixed well?

Why does the excess air in a blood sample for blood gas analysis need to be removed immediately after blood collection?

What needs to be taken into account when finishing blood collection with the Blood Gas Monovette® at a vascular access?

What is Ca2+ -balanced/titrated/equilibrated heparin?

How is the Blood Gas Monovette® prepared?

Does SARSTEDT offer collection systems for blood gas analytics?

Pre-analytics // Saliva collection

How should a saliva sample be stored if it cannot be analysed directly after collection?

Why should the Salivette® be used for saliva collection?

How is saliva collected using the Salivette®?

How much saliva can be collected using the Salivette®?

Why is there a TIME field on the label of the Salivette® Cortisol?

Why does the Salivette® have to be centrifuged?

What centrifugation conditions are generally recommended for the Salivette®?

What do the different Salivette® cap colours mean?

For which analytes is the Salivette® Cortisol validated?

Why does the Salivette® Cortisol contain a synthetic fibre swab?

When should the blue Salivette® (REF 51.1534.500) be used?

For which patients is the Salivette® suitable?

Pre-analytics // Liquor collection

Does SARSTEDT have products for CSF collection?

Is it possible to read the sample volume in the SARSTEDT products for CSF collection?

Is it possible to visually assess the CSF sample in the SARSTEDT products for CSF collection?

What material are SARSTEDT CSF products made of?

Is there a product for Alzheimer's disease markers?

Pre-analytics // Capillary and venous blood sedimentation

Which reference values apply for the S-Sedivette®?

Which sedimentation pipette is suitable for the S-Sedivette®?

Are the values from the S-Sedivette® comparable to the Westergren method?

Does the S-Sedivette® have to be mixed after blood collection?

What is the shelf life of the S-Sedivette®?

How is the S-Sedivette® prepared?

What must be taken into account when using the S-Sedivette® for blood sedimentation?

Is there an option to automatically determine ESR?

Do all the S-Sedivettes have to be placed in the Sediplus® device at the same time?

Can the Sediplus® S 2000 NX ESR analyser be integrated into an existing LIS system?

Pre-analytics // Multi-Safe disposal boxes

Disposal boxes

Is it possible to request a certificate (TRBA 250, UN, ISO 23907) for a customer-specific Multi-Safe disposal box?

Is it possible to order a customer-specific Multi-Safe disposal box?

Accessories for disposal boxes

Is it possible to buy pre-labelled Multi-Safe disposal boxes?

Is it possible to order a customer-specific Multi-Safe disposal box?

Pre-analytics // Veterinary medicine

What is pre-analytics in veterinary medicine?

What factors influence blood collection in animals?

What is the correct sequence for taking blood samples from animals?

Why are there different coloured tube caps?

How can I prevent haemolysis?

What is the difference between the centrifugation data centrifugal g-force and RPM?

What is the difference between serum and plasma?

How do I label the sample correctly for the laboratory?

Life Science // Sample handling

Screw cap micro tubes

Can screw cap micro tubes be stored on dry ice?

Is there a recommended torque for micro tube screw caps?

Can screw cap micro tubes be used at temperatures below zero centigrade?

What are the maximum speeds at which screw cap micro tubes can be centrifuged?

Can screw cap micro tubes and reaction tubes be autoclaved?

What are the dimensions of screw cap micro tubes?

Reaction tubes

Can screw cap micro tubes and reaction tubes be autoclaved?

What are the maximum speeds at which the reaction tubes can be centrifuged?

Reagent and centrifuge tubes

Can polypropylene tubes be used for freezing?

Can reagent and centrifuge tubes be autoclaved?

What are the maximum speeds at which the reagent and centrifuge tubes can be centrifuged?

How exact is the scale on the 15 ml and 50 ml tubes?

Caps

Can products made of polyethylene be autoclaved?

Life Science // Liquid handling

Pipette tips

When should a filter tip be used?

Can very small volumes be processed precisely with SARSTEDT pipette tips?

Can the pipette tips with filters be autoclaved?

When should a low retention pipette tip be used?

Which pipette tips are compatible with which pipettes?

Which pipette models are compatible with the refill tips?

How do I feed the boxes and refill components into the SARSTEDT recycling process?

Serological pipettes

Why do the serological pipettes have a negative graduation which goes beyond the volume indicated?

What is the dose accuracy of the Sarstedt serological pipettes?

Life Science // Cell culture

Cell culture flasks, plates and dishes

What does the red-yellow-green colour code with which the cell culture products are labelled mean?

Which caps are available with the cell culture flasks?

When should each type of cap be used for cell culture bottles?

Can the SARSTEDT cell culture flasks, plates and dishes be coated with, for example, poly-L-lysine?

What sizes of cell culture vessels does SARSTEDT offer?

What is the difference between primary and secondary cells?

What is the difference between suspension cells and adherent cells?

Which cell types are best suited for the respective growth surfaces?

How long do the growth surfaces remain stable under different cultivation conditions?

Are there special handling instructions for the culture of particularly sensitive cells?

Why do my cells grow in patterns (ring or wave-like) ?

BIOFLOAT™ cell culture plate, spheroid culture

What is the difference between primary and secondary cells?

What is the difference between suspension cells and adherent cells?

Can the medium in the plate be changed without using a new plate?

Are the BIOFLOAT™ plates suitable for cultivating organoids?

How long can cells be cultivated in the plate?

Why do some cells form only loose spheroids?

How quickly do spheroids form in the plates?

Do the plates need to be centrifuged after seeding the cells?

What cell count should be seeded per well?

Where do you find the plate dimensions that are needed for use in an analysis device?

Is there a protocol for spheroid culture in the BIOFLOAT™ plate?

Can fluorescence images be taken in the BIOFLOAT™ plate?

Which cell types are best suited for the respective growth surfaces?

How long do the growth surfaces remain stable under different cultivation conditions?

lumox® optical foil base

Which products are suitable for carrying out fluorescence or luminescence-based measurements of cells?

lumox® products are suitable for the cultivation of which cells?

What is lumox®?

Are the cell culture products checked for the presence of pyrogens or cytotoxins?

x-well microscope slide

What is the maximum magnification at which the different x-well tissue culture chambers can optimally be viewed under the microscope?

In which x-well tissue culture chambers is the slide detachable?

What are x-well products and what can they be used for?

miniPERM® bioreactor

How is the miniPERM® bioreactor subdivided?

In which sizes and designs are the miniPERM® bioreactors available?

What are the advantages of using a miniPERM® bioreactor?

Cryopreservation

How are the SARSTEDT CryoPure tubes certified?

Where should the CryoPure tubes in the nitrogen tank be stored – in the liquid phase or in the gas phase?

Filtration

With which connections are Filtropur L filters available?

What are the characteristics of Filtropur S, Filtropur S plus and Filtropur L filters?

Are the Filtropur BT filter attachments compatible with the threads of other bottles?

Which filtration units can be used to remove mycoplasms from solutions?

What pore size filter materials are available at SARSTEDT?

Swabs

What are the advantages of swabs with charcoal in the transport medium?

What are swabs with transport medium suitable for?

What can swabs without medium be used for?

Can the 80.625 swab be autoclaved?

What can the swabs with transport medium be used for?

Life Science // Microbiology

Petri dishes

What can Petri dishes with two compartments be used for?

What are the advantages of Petri dishes with and without ventilation cams?

Are Sarstedt Petri dishes suitable for use in automated plate casting machines?

Petri dish racks

What plastics are the SARSTEDT DishRack Petri dish stands made from and can these racks generally be autoclaved?

Inoculation tools

What are the advantages of SARSTEDT inoculation loops, inoculation needles and inoculation spreaders and for which applications are they suitable?

How high is the accuracy of the 1 µl and 10 µl inoculation loops?

Life Science // PCR and molecular biology

PCR plates, strips and single tubes

Which lids and foils can be used for qPCR?

Can Sarstedt's Multiply® PCR tubes and Multiply® PCR plates be frozen or stored in cold storage rooms?

Why should 'PCR Performance Tested' certified Multiply® PCR tubes and plates not be autoclaved?

When should a white PCR plate be used?

What is the difference between plates with 'high-profile' and 'low-profile' well design?

With which cyclers are our PCR plates compatible?

Life Science // General laboratory products

Cuvettes

In which wavelength range can SARSTEDT cuvettes be used?

Are there cuvettes which are suitable for fluorescence measurements?

How is the centre height (Z) of cuvettes defined?

Sample Transport // External shipping

For which products are the mailing containers designed?

Can the mailing containers be sent by post?

Sample Transport // Transport cases

How are the Transport Cases cleaned?

Can the transport cases be shipped in accordance with P650 ADR?

Can the foam inside the transport cases be replaced?

What does "three-component packaging" mean in terms of the shipping of diagnostic samples in substance class UN3373?

What do P650 "light" and "exempt human specimen" mean?

Sample Transport // Tempus1800®

Which sample tube dimensions are right for the Tempus1800® system?

Can we send both glass and plastic tubes in a Tempus1800® system?

How do we know if the hospitals sample tubes fit the Tempus1800® system?

What is the Tempus1800® sample tube list?

How are the sample tubes validated?

Is the Tempus1800® system compatible with other pre-analytics systems?

Can we start using the Tempus1800® system right after the installation?

What is the speed of the sample tubes that are transferred via the Tempus1800® solution?

How many sample tubes can we send per hour?

Will the samples be affected when arriving in the laboratory equipment?

Can a sample tube get stuck in the pipeline?

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