Contrôle de la qualité des aliments
Sous-catégorie
Analyte
Enzyme
Type de résultat
Plateforme
Marque
Températures optimales (°C)
Résultats 138
Rapid Integrated Total Dietary Fiber Assay Kit
SKU N° 700004335 | Numéro de catalogue K-RINTDF
The Rapid Integrated Total Dietary Fiber Assay Kit method is validated under collaborative study (AOAC Method 2017.16, ICC Standard No. 185) and suitable for the measurement and analysis of Total Dietary Fiber as per Codex Alimentarius definition.
Analyte: Fibre alimentaire
Plateforme: Enzymatique
Result Type: Gravimétrique/HPLC
Limit of Detection: 0.5 g/100 g
Validations: AOAC 2022.01, AACC Method 32-60.01, AOAC Method 2017.16 and ICC Standard Method No. 185 and CODEX Method Type I
Total Dietary Fiber Assay Kit
The Total Dietary Fiber Assay Kit for the analysis of Total, Soluble and Insoluble Dietary Fiber according to AOAC and AACC approved methods.
Analyte: Fibre alimentaire
Plateforme: Enzymatique
Result Type: Gravimétrique
Limit of Detection: 0.5 g/100 g
Validations: AACC Method 32-05.01, AACC Method 32-06.01, AACC Method 32-07.01, AACC Method 32-21.01, AOAC Method 985.29, AOAC Method 991.42, AOAC Method 991.43, AOAC Method 993.19, CODEX Method Type I and GB Standard 5009.88-2014
Total Starch Assay Kit (AA/AMG)
SKU N° 700004351 | Numéro de catalogue K-TSTA-100A
The Total Starch (AA/AMG) Assay Kit is used for the determination of total starch in cereal flours and food products.
Analyte: Total Starch
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.18 g/100 g total starch “as is”
Validations: AACC Method 76-13.01, AOAC Method 996.11, ICC Standard Method No. 168 and RACI Standard Method
Amyloglucosidase (Aspergillus niger)
High purity Amyloglucosidase (Aspergillus niger) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Validations: AOAC Method 2000.11 and GB Standard 5009.245-2016
Lactose/Galactose Assay Kit (Rapid)
SKU N° 700004307 | Numéro de catalogue K-LACGAR
The Lactose/Galactose (Rapid) test kit is used for the rapid test of lactose, D-galactose and L-arabinose in food and plant products.
Analyte: Lactose, D-Galactose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 2.96 mg/L
Validations: Methods based on this principle have been accepted by AOAC 2006.06, NBN, DIN, GOST and IDF
β-Glucan Assay Kit (Mixed Linkage)
SKU N° 700004269 | Numéro de catalogue K-BGLU
The Beta-Glucan test kit is suitable for the measurement and analysis of Beta-Glucan (Mixed Linkage).
Analyte: β-glucane
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.5 g/100 g
Validations: AACC Method 32-23.01, AOAC Method 995.16, AOAC Method 992.28, CODEX Method Type II, EBC Method 3.10.1, ICC Standard No. 166 and RACI Standard Method
Fructanase Mixture (liquid)
SKU N° 700004215 | Numéro de catalogue E-FRMXLQ
High purity Fructanase Mixture (liquid) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Validations: AOAC Method 997.08, AOAC Method 2000.11, AOAC Method 2016.06, GB Standard 5009.245-2016 and GB Standard 5009.255-2016
D-/L-Lactic Acid (D-/L-Lactate) (Rapid) Assay Kit
SKU N° 700004276 | Numéro de catalogue K-DLATE
The D-/L-Lactic Acid (D-/L-Lactate) (Rapid) test kit is used for the rapid and specific concurrent measurement and analysis of L-lactic acid (L-lactate) and D-lactic acid (D-lactate) in beverages, meat, dairy and food products.
Analyte: Acide D-lactique, Acide L-lactique
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.21 mg/L
Validations: Methods based on this principle have been accepted by DIN, GOST, IDF, EEC, EN, ISO, OIV, IFU, AIJN and MEBAK.
D-Glucose Assay Kit (GOPOD Format)
SKU N° 700004297 | Numéro de catalogue K-GLUC
The D-Glucose test kit contains high purity reagents for the measurement and analysis of D-glucose in cereal extracts and for use in combination with other Megazyme kits.
Analyte: D-glucose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 100 mg/L
Validations: Widely used and accepted in clinical chemistry and food analysis.
Protease (Subtilisin A from Bacillus licheniformis)
High purity Protease (Subtilisin A from Bacillus licheniformis) (liquid) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Amylose/Amylopectin Assay Kit
SKU N° 700004262 | Numéro de catalogue K-AMYL
The Amylose/Amylopectin test kit is suitable for the measurement and analysis of amylose/amylopectin ratio and content in cereal starches and flours. Based on a Con A precipitation procedure.
Analyte: Amylose, Amylopectine
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: Amylose 5-95% of total starch content
Validations: Novel method
D-Fructose/D-Glucose Assay Kit
SKU N° 700004287 | Numéro de catalogue K-FRUGL
D-Fructose/D-Glucose test kit, an enzymatic UV-method for the measurement and analysis of D-fructose and/or D-glucose in plant and food products.
Analyte: D-fructose, D-glucose
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.66 mg/L
Validations: Methods based on this principle have been accepted by AOAC Method 985.09, EN, NEN, NF, DIN, GOST, OIV, IFU, AIJN, MEBAK and IOCCC.
α-Amylase (Bacillus licheniformis)
High purity α-Amylase (Bacillus licheniformis) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Validations: EBC Method 6.5
β-Glucan Assay Kit (Yeast & Mushroom)
SKU N° 700004358 | Numéro de catalogue K-YBGL
The β-Glucan Assay Kit (Yeast and Mushroom) is suitable for the indirect measurement of 1,3:1,6-β-glucan in yeast and mushroom preparations containing starch, glycogen, sucrose and trehalose.
Analyte: β-glucane
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 1 g/100 g
Validations: Novel method
Sucrose/D-Fructose/D-Glucose Assay Kit
SKU N° 700004342 | Numéro de catalogue K-SUFRG
The Sucrose/D-Fructose/D-Glucose test kit is suitable for the measurement and analysis of sucrose, D-glucose and D-fructose in plant and food products.
Analyte: Saccharose, D-fructose, D-glucose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 1.38 mg/L
Validations: Methods based on this principle have been accepted by NF, EN, NEN, DIN, GOST, IFU, AIJN, MEBAK and IOCCC.
Enzymatic Yeast β-Glucan Assay Kit
SKU N° 700004278 | Numéro de catalogue K-EBHLG
Enzymatic Yeast Beta-Glucan test kit, an enzymatic procedure for the measurement and analysis of 1,3:1,6-β-glucan in yeast. Also measures 1,3-β-glucan.
Analyte: β-glucane
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 1 g/100 g
Validations: Novel method
Resistant Starch Assay Kit
SKU N° 700004336 | Numéro de catalogue K-RSTAR
The Resistant Starch Assay Kit for the measurement and analysis of resistant starch in plant materials and starch samples.
Analyte: Resistant Starch
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.036 g/100 g
Validations: AACC Method 32-40.01, AOAC Method 2002.02 and CODEX Method Type II
α-Amylase Reagent (Ceralpha)
SKU N° 700005034 | Numéro de catalogue R-CAAR4
Purchase high purity Ceralpha: α-Amylase Reagent – 4 vials for the measurement of α-amylase for research, biochemical enzyme assays and in vitro diagnostic analysis.
Analyte: α-Amylase
Plateforme: Spectrophotomètre, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.05 U/mL
L-Malic Acid Assay Kit (Manual Format)
SKU N° 700004311 | Numéro de catalogue K-LMAL-116A
L-Malic Acid (Regular) Assay Kit, for the specific assay of L-malic acid (L-malate) in beverages and food products.
Analyte: Acide L-malique
Plateforme: Spectrophotomètre, Microplaque
Result Type: Absorbance UV
Limit of Detection: 0.25 mg/L
Validations: Methods based on this principle have been accepted by AOAC, EEC, EN, NF, NEN, DIN, GOST, OIV, IFU, AIJN, NBN, ISO and MEBAK
Fructan Assay Kit
SKU N° 700004285 | Numéro de catalogue K-FRUC
The Fructan Assay Kit is suitable for the specific measurement of fructan in plant extracts, animal feed and food products containing starch, sucrose and other sugars.
Analyte: Fructane
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.16 g/100 g
Validations: AACC Method 32-32.01, AOAC Method 999.03, AOAC Method 2016.14, AOAC Method 2018.07 and CODEX Method Type III
α-Amylase Assay Kit (Ceralpha Method)
SKU N° 700004273 | Numéro de catalogue K-CERA
α-Amylase test kit is suitable for the specific measurement and analysis of α-amylase in cereal grains and fermentation broths (fungal and bacterial).
Analyte: α-Amylase
Plateforme: Spectrophotomètre, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.05 U/mL
Validations: AACC Method 22-02.01, AOAC Method 2002.01, ICC Standard No. 303, RACI Standard Method and CCFRA (Flour Testing Working Group Method 0018)
Phytic Acid Assay Kit
SKU N° 700004327 | Numéro de catalogue K-PHYT
The Phytic Acid test kit is a simple method for the measurement and analysis of phytic acid/total phosphorus in food and feed samples.
Analyte: Acide phytique, Phosphore
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: ~ 11.3 mg phosphorus (~ 40 mg phytic acid)
Validations: Novel method
Starch Damage Assay Kit
SKU N° 700004338 | Numéro de catalogue K-SDAM
The Starch Damage Test Kit is suitable for the determination of starch damage in wheat flour / cereal flours.
Analyte: Dommages causés par l’amidon
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.5 g/100 g
Validations: AACC Method 76-31.01, ICC Standard No. 164 and RACI Standard Method
Ammonia Assay Kit (Rapid)
SKU N° 700004261 | Numéro de catalogue K-AMIAR
Ammonia Assay Kit, for the rapid measurement and analysis of ammonia in all samples, including grape juice and wine (and other foods/beverages).
Analyte: Ammoniac, Azote, YA
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.07 mg/L
Validations: Methods based on this principle have been accepted by MEBAK.
α-Amylase HR Reagent
SKU N° 700005032 | Numéro de catalogue R-AMHR4
High purity α-Amylase HR Reagent – 4 vials for the measurement of α-amylase for research, biochemical enzyme assays and in vitro diagnostic analysis.
Analyte: α-Amylase
Plateforme: Spectrophotomètre, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.05 U/mL
Ethanol Assay Kit
SKU N° 700004279 | Numéro de catalogue K-ETOH
The Ethanol test kit is a simple, reliable and accurate method for the measurement and analysis of ethanol in beverages and foodstuffs.
Analyte: Éthanol
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.093 mg/L
Validations: Methods based on this principle have been accepted by AOAC (AOAC Method 2019.08, First Action), IFU, EBC Method 9.3.1, MEBAK and ASBC Method Beer 4-F
Acetic Acid Assay Kit (Acetate Kinase Manual Format)
SKU N° 700004258 | Numéro de catalogue K-ACETRM
The Acetic Acid (Acetate Kinase Manual Format) test kit is suitable for the measurement and analysis of acetic acid in food and beverages.
Analyte: Acide acétique
Plateforme: Spectrophotomètre, Microplaque
Result Type: Absorbance UV
Limit of Detection: 0.254 mg/L
Validations: Improved method
Citric Acid Assay Kit
SKU N° 700004274 | Numéro de catalogue K-CITR
The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.
Analyte: Acide citrique
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.491 mg/L
Validations: Methods based on this principle have been accepted by MEBAK, OIV, EU, ISO2963, AOAC and IFU22 (NOTE: If the enzyme oxaloacetate decarboxylase is present in the sample, some of the oxaloacetate product is converted to pyruvate. Therefore, to ensure citric acid is measured quantitatively, D-lactate dehydrogenase (D-LDH) is employed to efficiently convert any pyruvate produced into D-lactate and NAD+).
Sucrase (from yeast)
SKU N° 700004241 | Numéro de catalogue E-SUCR
High purity Sucrase (from yeast) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Validations: AOAC Method 2016.06 and GB Standard 5009.255-2016
Celite
SKU N° 700004249 | Numéro de catalogue G-CEL-500G
Celite, acid washed. For use in total dietary fiber assay procedures.
Acetic Acid Assay Kit (ACS Manual Format)
SKU N° 700004254 | Numéro de catalogue K-ACET
The Acetic Acid (ACS Manual Format) test kit is a simple method for the rapid and reliable measurement and analysis of acetic acid/acetate in foods, beverages and other materials.
Analyte: Acide acétique
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.14 mg/L
Validations: Methods based on this principle have been accepted by EN, ISO,ICUMSA, IFU and MEBAK.
Urea/Ammonia Assay Kit (Rapid)
SKU N° 700004353 | Numéro de catalogue K-URAMR
The Urea/Ammonia (Rapid) test kit is suitable for the specific and rapid measurement and analysis of urea and ammonia in water, beverages, milk and food products.
Analyte: Urée, Ammoniac, Azote, YA
Plateforme: Spectrophotomètre, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.13 mg/L (urea), 0.07 mg/L (ammonia)
Validations: Methods based on this principle have been accepted by NEN and MEBAK.
Xylanase Assay Kit (XylX6 Method)
SKU N° 700004357 | Numéro de catalogue K-XYLX6-2V
The XylX6 assay reagent for the measurement of endo-xylanase (endo-1,4-β-xylanase).
Analyte: endo-1,4-α-Xylanase
Plateforme: Spectrophotomètre, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 5.3 x 10-4 U/mL
Validations: Novel method
Fructanase Mixture (powder)
SKU N° 700004216 | Numéro de catalogue E-FRMXPD
Fructanase, Amyloglucosidase (E-AMGDF) and Isoamylase (E-ISAMY) are used in the enzyme hydrolysis step of two validated methods for the determination of polydextrose (a low molar mass dietary fiber) in foods.
Validations: AOAC Method 997.08, AOAC Method 2000.11, AOAC Method 2016.06, GB Standard 5009.245-2016 and GB Standard 5009.255-2016
Lactose Assay Kit - Sequential/High Sensitivity
SKU N° 700004314 | Numéro de catalogue K-LOLAC
The K-LOLAC test kit offers a rapid, novel, sequential measurement of free-glucose and lactose in conventional, low-lactose and lactose-free dairy products.
Analyte: Lactose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 1.62 mg/L
Validations: AOAC Method 2020.08
Total Sulfite Assay Kit (Enzymatic)
SKU N° 700004281 | Numéro de catalogue K-ETSULPH
The Total Sulfite (Enzymatic) test kit for the determination of total sulfite (as SO2) in wines, beverages, foodstuffs and other materials. A simple, highly specific and reliable, enzymatic method.
Analyte: Sulfite (Total)
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.34 mg/L
Validations: Methods based on this principle have been accepted by DIN, EN, MEBAK and NMKL.
L-Lactic Acid (L-Lactate) Assay Kit
SKU N° 700004310 | Numéro de catalogue K-LATE
The L-Lactic Acid (L-Lactate) Assay Kit is used for the specific measurement and analysis of L-lactic acid (L-lactate) in beverages, meat, dairy and food products.
Analyte: Acide L-lactique
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.21 mg/L
Validations: Methods based on this principle have been accepted by DIN, GOST, IDF, EEC, EN, ISO, OIV, IFU, AIJN and MEBAK.
Isoamylase (Glycogen 6-glucanohydrolase)
SKU N° 700004222 | Numéro de catalogue E-ISAMY
Pure Isoamylase (Glycogen 6-glucanohydrolase) for use in biochemical enzyme assays and in vitro diagnostic analysis.
Validations: AOAC Method 2000.11 and GB Standard 5009.245-2016
D-Glucose HK Assay Kit
The D-Glucose HK (Regular) test kit is a high purity reagent for the measurement and analysis of D-glucose in plant and food products. Can be used in combination with other Megazyme's products that require glucose determination.
Analyte: D-glucose
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.66 mg/L
Validations: Methods based on this principle have been accepted by AOAC, EN, NEN, NF, DIN, GOST, OIV, IFU, AIJN, MEBAK and ASBC Method Malt 6-D
Maltose/Sucrose/D-Glucose Assay Kit
SKU N° 700004318 | Numéro de catalogue K-MASUG
The Maltose/Sucrose/D-Glucose Assay Kit is suitable for the measurement and analysis of maltose, sucrose and D-glucose in plant and food products.
Analyte: Maltose, Saccharose, D-glucose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 1.5 mg/L
Validations: Methods based on this principle have been accepted by AOAC, EN, NEN, NF, DIN, GOST, OIV, IFU, AIJN and MEBAK.
Protease Subtilisin A (from Bacillus licheniformis) Powder
SKU N° 700004200 | Numéro de catalogue E-BSPRPD
High purity Protease (Subtilisin A from Bacillus licheniformis) (Powder) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Acetic Acid GK Assay Kit (Analyser Format)
SKU N° 700004257 | Numéro de catalogue K-ACETGK
The Acetic Acid GK format test kit is for use with auto-analysers and is suitable for the specific measurement and analysis of acetic acid (acetate) especially in wines, fruit juices, beverages and food products.
Analyte: Acide acétique
Plateforme: Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: ~ 10 mg/L
Validations: Improved method
β-Limit Dextrin
High purity β-Limit Dextrin 10 g for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
Analyte: α-Amylase, Pullulanase, Limite-dextrinase
Validations: EBC Method 4.13 and ASBC Method Malt 7
Trehalose Assay Kit
SKU N° 700004348 | Numéro de catalogue K-TREH
The Trehalose assay kit is a simple method for the rapid and reliable measurement and analysis of trehalose in foods, beverages and other materials.
Analyte: Tréhalose
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 37.5 mg/L
Validations: Novel method
Primary Amino Nitrogen Assay Kit (PANOPA)
SKU N° 700004323 | Numéro de catalogue K-PANOPA
The Primary Amino Nitrogen (PANOPA) Assay Kit is suitable for the measurement and analysis of primary amino nitrogen in grape juice/must and wine.
Analyte: Azote aminé primaire, Azote, YA
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 2.59 mg N/L
Validations: Novel method
Acetaldehyde Assay Kit
SKU N° 700004260 | Numéro de catalogue K-ACHYD
The Acetaldehyde test kit is a simple, reliable and accurate method for the measurement and analysis of acetaldehyde in beverages and foodstuffs.
Analyte: Acétaldéhyde
Plateforme: Spectrophotomètre, Microplaque, Analyses automatiques
Result Type: Absorbance UV
Limit of Detection: 0.18 mg/L
Validations: Methods based on this principle have been accepted by MEBAK.
β-Amylase Assay Kit (Betamyl-3)
SKU N° 700004268 | Numéro de catalogue K-BETA3
The Betamyl-3; β-Amylase test kit is suitable for the specific measurement and analysis of β-amylase in malt flour.
Analyte: β-Amylase
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.05 U/mL
Validations: Modification of RACI Standard Method
β-Amylase Assay Reagent (Betamyl-3)
SKU N° 700005033 | Numéro de catalogue R-BAMR3
High purity Betamyl-3; β-Amylase Assay Reagent – 4 vials for the measurement of β-amylase for research, biochemical enzyme assays and in vitro diagnostic analysis.
Analyte: β-Amylase
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.05 U/mL
D-Mannose/D-Fructose/D-Glucose Assay kit
SKU N° 700004316 | Numéro de catalogue K-MANGL
The D-Mannose/D-Fructose/D-Glucose test kit is suitable for the specific measurement and analysis of D-mannose, D-fructose and D-glucose in plant products and in acid hydrolysates of polysaccharides.
Analyte: D-Mannose, D-fructose, D-glucose
Plateforme: Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: ~ 0.7 mg/L
Validations: Novel method
L-Malic Acid Assay Kit (Liquid Ready™)
SKU N° 700007622 | Numéro de catalogue K-LMLQR
The L-Malic Acid (Liquid Ready™) test kit is a rapid, simple, reliable, and accurate method for the specific measurement and analysis of L-malic acid in wine, beverages, foodstuffs, and other materials.
Analyte: Acide L-malique
Plateforme: Analyses automatiques, Spectrophotomètre
Result Type: Absorbance UV
Limit of Detection: 0.005 g/L
Les fabricants de produits alimentaires et de boissons ont besoin de contrôler les paramètres de qualité des produits alimentaires. Ils doivent également produire des aliments offrant une qualité constamment élevée, de manière à satisfaire leurs clients, tout en s'appuyant sur des processus de production économiques.
Megazyme est conscient de cette problématique et propose une large gamme de kits de test et d'enzymes diagnostiques conçus pour aider les fabricants de produits alimentaires dans des industries aussi diverses que le vin, les produits laitiers, la brasserie et la minoterie. Ces produits sont d'une qualité exceptionnelle, les composants sont extrêmement purs et les méthodes ont souvent été validées officiellement par des associations analytiques essentielles de l'industrie. L'automatisation des analyses est possible avec les produits Megazyme afin de répondre aux besoins de tous les types de fabricants, quels que soient leur taille, leurs exigences analytiques et leur débit de traitement d'échantillons.