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Primary Reference Standard

When precision matters most, start with the highest benchmark—Primary Reference Standards from Lancetech Ltd are essential for achieving traceable and reproducible results in analytical testing. These ultra-pure substances serve as the definitive reference point for calibrating instruments, verifying methods, and producing secondary standards.


Ideal for pharmaceutical, environmental, and chemical laboratories, our primary standards ensure compliance with global regulatory requirements and support accurate quantification across a wide range of applications. Each standard is backed by detailed documentation and traceability to certified bodies, ensuring your data integrity from the first measurement onward.


Explore our range of primary reference materials and set a solid foundation for your lab’s analytical success.

Cefotaxime Sodium, USP 1 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: C011-1G
Cefotaxime Sodium, USP 1 g CAS number 64485-93-4 and purity (On Dried Basis): 916-964 μg/mg ...
Price excludes taxes and shipping charges. Save -10%
£110.30 £122.56
Cefotaxime Sodium, USP 5 g
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Manufacturer: TOKU-E Item Number: C011-5G
Cefotaxime Sodium, USP 5 g CAS number 64485-93-4 and purity (On Dried Basis): 916-964 μg/mg ...
Price excludes taxes and shipping charges. Save -10%
£470.60 £522.89
Cefotetan 100 mg
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Manufacturer: TOKU-E Item Number: C012-100MG
Cefotetan 100 mg CAS number 69712-56-7 and purity (On Dried Basis): 96.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£288.05 £320.05
Cefotetan Disodium 100mg
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Manufacturer: TOKU-E Item Number: C117-100MG
Cefotetan Disodium 100mg CAS number 74356-00-6 and purity (HPLC As Is): ≥ 95.0%...
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£84.78 £94.20
Cefotetan Disodium 1g
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Manufacturer: TOKU-E Item Number: C117-1G
Cefotetan Disodium 1g CAS number 74356-00-6 and purity (HPLC As Is): ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£609.33 £677.03
Cefotiam Dihydrochloride 100 mg
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Manufacturer: TOKU-E Item Number: C095-100MG
Cefotiam Dihydrochloride 100 mg CAS number 66309-69-1 and purity ≥98.0%...
Price excludes taxes and shipping charges. Save -10%
£263.00 £292.22
Cefotiam Dihydrochloride 50 mg
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Manufacturer: TOKU-E Item Number: C095-50MG
Cefotiam Dihydrochloride 50 mg CAS number 66309-69-1 and purity ≥98.0%...
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£147.88 £164.31
Cefoxitin 1 g
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Manufacturer: TOKU-E Item Number: C091-1G
Cefoxitin 1 g CAS number 35607-66-0 and purity (On Dried Basis): ≥98.0%...
Price excludes taxes and shipping charges. Save -10%
£146.92 £163.24
Cefoxitin Sodium USP 1 g
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Manufacturer: TOKU-E Item Number: C054-1G
Cefoxitin Sodium USP 1 g CAS number 33564-30-6 and purity On Dried Basis: 927 - 970 µg/mg (based on C16H17N3O7S2); 97.5% - 102.0% (based on C16H16N3Na..
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£193.64 £215.15
Cefoxitin Sodium USP 250 mg
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Manufacturer: TOKU-E Item Number: C054-250MG
Cefoxitin Sodium USP 250 mg CAS number 33564-30-6 and purity On Dried Basis: 927 - 970 µg/mg (based on C16H17N3O7S2); 97.5% - 102.0% (based on C16H16N..
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£69.84 £77.60
Cefoxitin Sodium USP 5 g
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Manufacturer: TOKU-E Item Number: C054-5G
Cefoxitin Sodium USP 5 g CAS number 33564-30-6 and purity On Dried Basis: 927 - 970 µg/mg (based on C16H17N3O7S2); 97.5% - 102.0% (based on C16H16N3Na..
Price excludes taxes and shipping charges. Save -10%
£637.26 £708.07
Cefozopran Hydrochloride 100 mg
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Manufacturer: TOKU-E Item Number: C099-100MG
Cefozopran Hydrochloride 100 mg CAS number 113981-44-5 and purity ≥ 97.0%...
Price excludes taxes and shipping charges. Save -10%
£287.08 £318.98
Cefpirome Sulfate 1 g
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Manufacturer: TOKU-E Item Number: C014-1G
Cefpirome Sulfate 1 g CAS number 98753-19-6 and purity (On Dried Basis): ≥99.0% ...
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£224.46 £249.40
Cefpirome Sulfate solubilized 1 g
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Manufacturer: TOKU-E Item Number: C055-1G
Cefpirome Sulfate solubilized 1 g CAS number 98753-19-6 (Cefpirome Sulfate) and purity (On Dried Basis): 80.3-89.2% (cefpirome sulfate)...
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£218.68 £242.98
Cefpodoxime Free Acid 100 mg
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Manufacturer: TOKU-E Item Number: C016-100MG
Cefpodoxime Free Acid 100 mg CAS number 80210-62-4 and purity ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£260.11 £289.01
Cefpodoxime Proxetil 100 mg
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Manufacturer: TOKU-E Item Number: C015-100MG
Cefpodoxime Proxetil 100 mg CAS number 87239-81-4 and purity (On Dried Basis): ≥96.0%...
Price excludes taxes and shipping charges. Save -10%
£110.30 £122.56
Cefpodoxime Sodium 100 mg
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Manufacturer: TOKU-E Item Number: C096-100MG
Cefpodoxime Sodium 100 mg CAS number 82619-04-3 and purity ≥95.0% (HPLC, as-is)...
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£277.93 £308.81
Cefprozil 10 mg
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Manufacturer: TOKU-E Item Number: C017-10MG
Cefprozil 10 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
Price excludes taxes and shipping charges. Save -10%
£133.43 £148.25
Cefprozil 100 mg
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Manufacturer: TOKU-E Item Number: C017-100MG
Cefprozil 100 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
Price excludes taxes and shipping charges. Save -10%
£1,085.71 £1,206.34
Cefprozil 50 mg
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Manufacturer: TOKU-E Item Number: C017-50MG
Cefprozil 50 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
Price excludes taxes and shipping charges. Save -10%
£625.22 £694.69
Cefquinome Sulfate 100 mg
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Manufacturer: TOKU-E Item Number: C239-100MG
Cefquinome Sulfate 100 mg CAS number 118443-89-3 and purity ≤ 98%...
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£119.46 £132.73
Cefquinome Sulfate 500 mg
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Manufacturer: TOKU-E Item Number: C239-500MG
Cefquinome Sulfate 500 mg CAS number 118443-89-3 and purity ≤ 98%...
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£485.53 £539.48
Cefradine 1 g
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Manufacturer: TOKU-E Item Number: C057-1G
Cefradine 1 g CAS number 38821-53-3 and purity ≥ 98.0%...
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£229.28 £254.76
Cefradine 5 g
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Manufacturer: TOKU-E Item Number: C057-5G
Cefradine 5 g CAS number 38821-53-3 and purity ≥ 98.0%...
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£788.03 £875.59
Cefradine 500 mg
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Manufacturer: TOKU-E Item Number: C057-500MG
Cefradine 500 mg CAS number 38821-53-3 and purity ≥ 98.0%...
Price excludes taxes and shipping charges. Save -10%
£130.05 £144.50
Cefsulodin Sodium 1 g
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Manufacturer: TOKU-E Item Number: C058-1G
Cefsulodin Sodium 1 g CAS number 52152-93-9 and purity (On Dried Basis): ≤90.0%...
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£233.61 £259.57
Cefsulodin Sodium 100 mg
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Manufacturer: TOKU-E Item Number: C058-100MG
Cefsulodin Sodium 100 mg CAS number 52152-93-9 and purity (On Dried Basis): ≤90.0%...
Price excludes taxes and shipping charges. Save -10%
£48.65 £54.06
Cefsulodin Sodium 250 mg
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Manufacturer: TOKU-E Item Number: C058-250MG
Cefsulodin Sodium 250 mg CAS number 52152-93-9 and purity (On Dried Basis): ≤90.0%...
Price excludes taxes and shipping charges. Save -10%
£81.41 £90.45
Ceftaroline Dihydrochloride 10 mg
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Manufacturer: TOKU-E Item Number: C248-10MG
Ceftaroline Dihydrochloride 10 mg CAS number nan and purity >=95%...
Price excludes taxes and shipping charges. Save -10%
£547.19 £607.99
Ceftaroline Fosamil 100mg
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Manufacturer: TOKU-E Item Number: C230-100MG
Ceftaroline Fosamil 100mg CAS number 400827-46-5 and purity ≥ 96.0%...
Price excludes taxes and shipping charges. Save -10%
£829.94 £922.15
Ceftaroline Fosamil 10mg
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Manufacturer: TOKU-E Item Number: C230-10MG
Ceftaroline Fosamil 10mg CAS number 400827-46-5 and purity ≥ 96.0%...
Price excludes taxes and shipping charges. Save -10%
£231.21 £256.90
Ceftazidime Delta-3-Isomer EvoPure® 10 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: C121-10MG
Ceftazidime Delta-3-Isomer EvoPure® 10 mg CAS number Not Established and purity >95% by HPLC...
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£399.31 £443.68
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Ceftazidime Hydrochloride 1 g
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Manufacturer: TOKU-E Item Number: C020-1G
Ceftazidime Hydrochloride 1 g CAS number 73547-70-3 and purity ≥ 96.0%...
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£769.24 £854.71
Ceftazidime Pentahydrate 1 g
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Manufacturer: TOKU-E Item Number: C059-1G
Ceftazidime Pentahydrate 1 g CAS number 78439-06-2 and purity (On Dried Basis): 95.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£123.31 £137.01
Ceftazidime Pentahydrate 5 g
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Manufacturer: TOKU-E Item Number: C059-5G
Ceftazidime Pentahydrate 5 g CAS number 78439-06-2 and purity (On Dried Basis): 95.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£560.67 £622.97
Ceftazidime Solubilized 1 g
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Manufacturer: TOKU-E Item Number: C019-1G
Ceftazidime Solubilized 1 g CAS number mixture and purity 90.0 - 105.0%...
Price excludes taxes and shipping charges. Save -10%
£135.35 £150.39
Ceftazidime Solubilized 5 g
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Manufacturer: TOKU-E Item Number: C019-5G
Ceftazidime Solubilized 5 g CAS number mixture and purity 90.0 - 105.0%...
Price excludes taxes and shipping charges. Save -10%
£635.34 £705.93
Cefteram pivoxil 10 mg
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Manufacturer: TOKU-E Item Number: C144-10MG
Cefteram pivoxil 10 mg CAS number 82547-81-7 and purity ≥98.0% (as is)...
Price excludes taxes and shipping charges. Save -10%
£124.27 £138.08
Ceftezole Sodium 100 mg
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Manufacturer: TOKU-E Item Number: C238-100MG
Ceftezole Sodium 100 mg CAS number 41136-22-5 and purity (On Dried Basis): ≥90%...
Price excludes taxes and shipping charges. Save -10%
£448.93 £498.81
Ceftezole Sodium 25mg
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Manufacturer: TOKU-E Item Number: C238-25MG
Ceftezole Sodium 25mg CAS number 41136-22-5 and purity (On Dried Basis): ≥90%...
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£121.38 £134.87
Ceftibuten 10 mg
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Manufacturer: TOKU-E Item Number: C069-10MG
Ceftibuten 10 mg CAS number 97519-39-6 and purity ≥ 95.0% ...
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£62.62 £69.58
Ceftibuten 100 mg
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Manufacturer: TOKU-E Item Number: C069-100MG
Ceftibuten 100 mg CAS number 97519-39-6 and purity ≥ 95.0%...
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£476.38 £529.31
Ceftiofur Hydrochloride 1 g
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Manufacturer: TOKU-E Item Number: C228-1G
Ceftiofur Hydrochloride 1 g CAS number 103980-44-5 and purity ≥98.0% ...
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£102.60 £114.00
Ceftiofur Hydrochloride 5 g
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Manufacturer: TOKU-E Item Number: C228-5G
Ceftiofur Hydrochloride 5 g CAS number 103980-44-5 and purity ≥98.0% ...
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£381.49 £423.88
Ceftiofur Sodium 1 g
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Manufacturer: TOKU-E Item Number: C061-1G
Ceftiofur Sodium 1 g CAS number 104010-37-9 and purity (On Dried Basis): ≥95.0% ...
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£104.53 £116.14
Ceftiofur Sodium 5 g
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Manufacturer: TOKU-E Item Number: C061-5G
Ceftiofur Sodium 5 g CAS number 104010-37-9 and purity (On Dried Basis): ≥95.0% ...
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£308.75 £343.06
Ceftizoxime Sodium 1 g
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Manufacturer: TOKU-E Item Number: C021-1G
Ceftizoxime Sodium 1 g CAS number 68401-82-1 and purity (On Dried Basis): 850-995 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£141.13 £156.81
Ceftobiprole Medocaril Sodium 10 mg
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Manufacturer: TOKU-E Item Number: C236-10MG
Ceftobiprole Medocaril Sodium 10 mg CAS number 252188-71-9 and purity ≥95%...
Price excludes taxes and shipping charges. Save -10%
£518.29 £575.88
Ceftobiprole Medocaril Sodium 100 mg
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Manufacturer: TOKU-E Item Number: C236-100MG
Ceftobiprole Medocaril Sodium 100 mg CAS number 252188-71-9 and purity ≥95%...
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£1,104.49 £1,227.21
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Ceftolozane sulfate 10 mg
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Manufacturer: TOKU-E Item Number: C245-10MG
Ceftolozane sulfate 10 mg CAS number 936111-69-2 (sulfate); 689293-68-3 (free base) and purity ≥98.0% (HPLC)...
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£524.07 £582.30
Ceftolozane Sulfate stabilized w/ arginine 10 mg
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Manufacturer: TOKU-E Item Number: C261-10MG
Ceftolozane Sulfate stabilized w/ arginine 10 mg CAS number 936111-64-2 and purity >98.0% ...
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£231.21 £256.90
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