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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.

Manufacturer: TOKU-E Item Number: C014-1G
Cefpirome Sulfate 1 g CAS number 98753-19-6 and purity (On Dried Basis): ≥99.0% ...
Price excludes taxes and shipping charges. Save -10%
£231.21 £256.90
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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£225.43 £250.47
Manufacturer: TOKU-E Item Number: C016-100MG
Cefpodoxime Free Acid 100 mg CAS number 80210-62-4 and purity ≥ 95.0%...
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£268.30 £298.11
Manufacturer: TOKU-E Item Number: C015-100MG
Cefpodoxime Proxetil 100 mg CAS number 87239-81-4 and purity (On Dried Basis): ≥96.0%...
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£113.68 £126.31
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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£286.60 £318.44
Manufacturer: TOKU-E Item Number: C017-10MG
Cefprozil 10 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
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£137.76 £153.07
Manufacturer: TOKU-E Item Number: C017-100MG
Cefprozil 100 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
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£1,118.46 £1,242.73
Manufacturer: TOKU-E Item Number: C017-50MG
Cefprozil 50 mg CAS number 92665-29-7 and purity 90.0% - 105.0%...
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£644.01 £715.56
Manufacturer: TOKU-E Item Number: C239-100MG
Cefquinome Sulfate 100 mg CAS number 118443-89-3 and purity ≤ 98%...
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£123.31 £137.01
Manufacturer: TOKU-E Item Number: C239-500MG
Cefquinome Sulfate 500 mg CAS number 118443-89-3 and purity ≤ 98%...
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£500.47 £556.07
Manufacturer: TOKU-E Item Number: C057-1G
Cefradine 1 g CAS number 38821-53-3 and purity ≥ 98.0%...
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£236.50 £262.78
Manufacturer: TOKU-E Item Number: C057-5G
Cefradine 5 g CAS number 38821-53-3 and purity ≥ 98.0%...
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£812.11 £902.35
Manufacturer: TOKU-E Item Number: C057-500MG
Cefradine 500 mg CAS number 38821-53-3 and purity ≥ 98.0%...
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£134.39 £149.32
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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£240.84 £267.60
Manufacturer: TOKU-E Item Number: C058-100MG
Cefsulodin Sodium 100 mg CAS number 52152-93-9 and purity (On Dried Basis): ≤90.0%...
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£50.58 £56.20
Manufacturer: TOKU-E Item Number: C058-250MG
Cefsulodin Sodium 250 mg CAS number 52152-93-9 and purity (On Dried Basis): ≤90.0%...
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£84.29 £93.66
Manufacturer: TOKU-E Item Number: C248-10MG
Ceftaroline Dihydrochloride 10 mg CAS number nan and purity >=95%...
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£564.05 £626.72
Manufacturer: TOKU-E Item Number: C230-100MG
Ceftaroline Fosamil 100mg CAS number 400827-46-5 and purity ≥ 96.0%...
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£854.98 £949.98
Manufacturer: TOKU-E Item Number: C230-10MG
Ceftaroline Fosamil 10mg CAS number 400827-46-5 and purity ≥ 96.0%...
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£238.43 £264.92
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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£411.35 £457.06
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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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£792.36 £880.40
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%...
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£127.16 £141.29
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%...
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£577.53 £641.70
Manufacturer: TOKU-E Item Number: C019-1G
Ceftazidime Solubilized 1 g CAS number mixture and purity 90.0 - 105.0%...
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£139.69 £155.21
Manufacturer: TOKU-E Item Number: C019-5G
Ceftazidime Solubilized 5 g CAS number mixture and purity 90.0 - 105.0%...
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£654.60 £727.34
Manufacturer: TOKU-E Item Number: C144-10MG
Cefteram pivoxil 10 mg CAS number 82547-81-7 and purity ≥98.0% (as is)...
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£128.13 £142.36
Manufacturer: TOKU-E Item Number: C238-100MG
Ceftezole Sodium 100 mg CAS number 41136-22-5 and purity (On Dried Basis): ≥90%...
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£462.41 £513.79
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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£125.24 £139.15
Manufacturer: TOKU-E Item Number: C069-10MG
Ceftibuten 10 mg CAS number 97519-39-6 and purity ≥ 95.0% ...
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£64.55 £71.72
Manufacturer: TOKU-E Item Number: C069-100MG
Ceftibuten 100 mg CAS number 97519-39-6 and purity ≥ 95.0%...
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£490.83 £545.37
Manufacturer: TOKU-E Item Number: C228-1G
Ceftiofur Hydrochloride 1 g CAS number 103980-44-5 and purity ≥98.0% ...
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£105.97 £117.74
Manufacturer: TOKU-E Item Number: C228-5G
Ceftiofur Hydrochloride 5 g CAS number 103980-44-5 and purity ≥98.0% ...
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£393.05 £436.72
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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£107.90 £119.88
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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£318.39 £353.77
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...
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£145.47 £161.63
Manufacturer: TOKU-E Item Number: C236-10MG
Ceftobiprole Medocaril Sodium 10 mg CAS number 252188-71-9 and purity ≥95%...
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£534.18 £593.54
Manufacturer: TOKU-E Item Number: C236-100MG
Ceftobiprole Medocaril Sodium 100 mg CAS number 252188-71-9 and purity ≥95%...
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£1,137.73 £1,264.14
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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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£539.96 £599.96
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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£238.43 £264.92
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Manufacturer: TOKU-E Item Number: C261-50MG
Ceftolozane Sulfate stabilized w/ arginine 50 mg CAS number 936111-64-2 and purity >98.0% ...
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£649.79 £721.98
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Manufacturer: TOKU-E Item Number: C074-1G
Ceftriaxone free acid 1 g CAS number 73384-59-5 and purity ≥99.0% (HPLC)...
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£208.09 £231.21
Manufacturer: TOKU-E Item Number: C074-250MG
Ceftriaxone free acid 250 mg CAS number 73384-59-5 and purity ≥99.0% (HPLC)...
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£104.04 £115.60
Manufacturer: TOKU-E Item Number: C022-1G
Ceftriaxone Sodium, USP 1 g CAS number 104376-79-6 (trihydrate); 74578-69-1 (Dried) and purity (On Dried Basis): ≥795 µg/mg...
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£257.22 £285.80
Manufacturer: TOKU-E Item Number: C022-250MG
Ceftriaxone Sodium, USP 250 mg CAS number 104376-79-6 (trihydrate); 74578-69-1 (Dried) and purity (On Dried Basis): ≥795 µg/mg...
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£86.70 £96.34
Manufacturer: TOKU-E Item Number: C282-1G
Cefuroxime free acid 1 g CAS number 55268-75-2 and purity >=98% (anhydrous basis)...
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£124.27 £138.08
Manufacturer: TOKU-E Item Number: C282-5G
Cefuroxime free acid 5 g CAS number 55268-75-2 and purity >=98% (anhydrous basis)...
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£408.95 £454.38
Manufacturer: TOKU-E Item Number: C023-1G
Cefuroxime Sodium 1 g CAS number 56238-63-2 and purity (On Dried Basis): ≥ 86.0%...
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£121.38 £134.87
Manufacturer: TOKU-E Item Number: C023-5G
Cefuroxime Sodium 5 g CAS number 56238-63-2 and purity (On Dried Basis): ≥ 86.0%...
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£401.24 £445.82
Manufacturer: TOKU-E Item Number: C163-25MG
Cellocidin 25 mg CAS number 543-21-5 and purity >95% by HPLC...
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£318.39 £353.77
Manufacturer: TOKU-E Item Number: C163-5MG
Cellocidin 5 mg CAS number 543-21-5 and purity >95% by HPLC...
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£91.52 £101.69
Manufacturer: TOKU-E Item Number: C024-10G
Cephalexin Hydrate 10 g CAS number 23325-78-2 and purity 950-1030 µg/mg...
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£239.88 £266.53
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