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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: C159-5MG
Caerulomycin 5 mg CAS number 21802-37-9 and purity >95% by HPLC...
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£894.48 £993.87
Manufacturer: TOKU-E Item Number: C155-1G
Caffeic acid phenethyl ester (CAPE) 1 g CAS number 104594-70-9 and purity (HPLC): Not less than 99.5%...
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£543.82 £604.24
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Manufacturer: TOKU-E Item Number: C155-100MG
Caffeic acid phenethyl ester (CAPE) 100 mg CAS number 104594-70-9 and purity (HPLC): Not less than 99.5%...
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£135.35 £150.39
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Manufacturer: TOKU-E Item Number: C160-1MG
Calcimycin 1 mg CAS number 52665-69-7 and purity >95% by HPLC...
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£68.88 £76.53
Manufacturer: TOKU-E Item Number: C160-5MG
Calcimycin 5 mg CAS number 52665-69-7 and purity >95% by HPLC...
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£238.43 £264.92
Manufacturer: TOKU-E Item Number: C161-0.1MG
Calphostin C 0.1 mg CAS number 121263-19-2 and purity >95% by HPLC...
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£184.97 £205.52
Manufacturer: TOKU-E Item Number: C161-0.5MG
Calphostin C 0.5 mg CAS number 121263-19-2 and purity >95% by HPLC...
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£644.97 £716.63
Manufacturer: TOKU-E Item Number: C070-100MG
Camptothecin (Camptotheca acuminata) 100 mg CAS number 7689-03-4 and purity >99.0%...
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£98.26 £109.18
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Manufacturer: TOKU-E Item Number: C070-250MG
Camptothecin (Camptotheca acuminata) 250 mg CAS number 7689-03-4 and purity >99.0%...
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£220.61 £245.12
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Manufacturer: TOKU-E Item Number: C070-50MG
Camptothecin (Camptotheca acuminata) 50 mg CAS number 7689-03-4 and purity >99.0%...
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£61.66 £68.51
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Manufacturer: TOKU-E Item Number: C145-100MG
Camptothecin (Mappia foetida) 100 mg CAS number 7689-03-4 and purity >99%...
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£98.26 £109.18
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Manufacturer: TOKU-E Item Number: C145-250MG
Camptothecin (Mappia foetida) 250 mg CAS number 7689-03-4 and purity >99%...
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£220.61 £245.12
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Manufacturer: TOKU-E Item Number: C145-50MG
Camptothecin (Mappia foetida) 50 mg CAS number 7689-03-4 and purity >99%...
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£61.66 £68.51
Manufacturer: TOKU-E Item Number: C146-100MG
Camptothecin sodium 100 mg CAS number 25387-67-1 and purity ≥ 95.0% (by HPLC)...
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£103.56 £115.07
Manufacturer: TOKU-E Item Number: C146-250MG
Camptothecin sodium 250 mg CAS number 25387-67-1 and purity ≥ 95.0% (by HPLC)...
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£232.65 £258.50
Manufacturer: TOKU-E Item Number: C146-50MG
Camptothecin sodium 50 mg CAS number 25387-67-1 and purity ≥ 95.0% (by HPLC)...
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£65.51 £72.79
Manufacturer: TOKU-E Item Number: C002-1MG
Candicidin 1 mg CAS number 1403-17-4 and purity >95% by HPLC...
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£576.09 £640.10
Manufacturer: TOKU-E Item Number: C002-5MG
Candicidin 5 mg CAS number 1403-17-4 and purity >95% by HPLC...
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£166.18 £184.64
Manufacturer: TOKU-E Item Number: C162-25MG
Capreomycin 25 mg CAS number 11003-38-6 and purity >95% by HPLC...
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£407.98 £453.31
Manufacturer: TOKU-E Item Number: C162-5MG
Capreomycin 5 mg CAS number 11003-38-6 and purity >95% by HPLC...
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£117.53 £130.59
Manufacturer: TOKU-E Item Number: C003-1G
Capreomycin Sulfate 1 g CAS number 1405-37-4 and purity (On Dried Basis): 700 µg/mg - 1050 µg/mg ...
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£238.43 £264.92
Manufacturer: TOKU-E Item Number: C148-100MG
Carbadox 100 mg CAS number 6804-07-5 and purity ≥ 98.0%...
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£103.56 £115.07
Manufacturer: TOKU-E Item Number: C262-1MG
Carbazomycin A 1 mg CAS number 75139-39-8 and purity >99% by HPLC...
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£205.68 £228.53
Manufacturer: TOKU-E Item Number: C262-5MG
Carbazomycin A 5 mg CAS number 75139-39-8 and purity >99% by HPLC...
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£719.63 £799.59
Manufacturer: TOKU-E Item Number: C263-1MG
Carbazomycin B 1 mg CAS number 75139-38-7 and purity >99% by HPLC...
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£205.68 £228.53
Manufacturer: TOKU-E Item Number: C263-5MG
Carbazomycin B 5 mg CAS number 75139-38-7 and purity >99% by HPLC...
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£719.63 £799.59
Manufacturer: TOKU-E Item Number: C264-1MG
Carbazomycin C 1 mg CAS number 108073-62-7 and purity >99% by HPLC...
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£205.68 £228.53
Manufacturer: TOKU-E Item Number: C264-5MG
Carbazomycin C 5 mg CAS number 108073-62-7 and purity >99% by HPLC...
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£719.63 £799.59
Manufacturer: TOKU-E Item Number: C265-0.1MG
Carbazomycin D 0.1 mg CAS number 108073-63-8 and purity >99% by HPLC...
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£146.92 £163.24
Manufacturer: TOKU-E Item Number: C265-0.5MG
Carbazomycin D 0.5 mg CAS number 108073-63-8 and purity >99% by HPLC...
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£512.03 £568.92
Manufacturer: TOKU-E Item Number: C126-1G
Carbenicillin Disodium USP 1 g CAS number 4800-94-6 and purity (On Dried Basis): >-770 ug/mg...
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£58.76 £65.29
Manufacturer: TOKU-E Item Number: C126-5G
Carbenicillin Disodium USP 5 g CAS number 4800-94-6 and purity (On Dried Basis): ≥770 ug/mg...
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£234.58 £260.64
Manufacturer: TOKU-E Item Number: C107-1G
Carbenicillin Disodium, CulturePure® 1 g CAS number 4800-94-6 and purity ≥90.0% (as-is)...
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£68.88 £76.53
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Manufacturer: TOKU-E Item Number: C107-5G
Carbenicillin Disodium, CulturePure® 5 g CAS number 4800-94-6 and purity ≥90.0% (as-is)...
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£238.43 £264.92
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Manufacturer: TOKU-E Item Number: C289-10x1ML
Carbenicillin ReadyMade Solution 10 x 1 mL CAS number 4800-94-6 and purity ≥770 µg/mg (on dry basis)(Carbenicillin Disodium)...
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£54.91 £61.01
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Manufacturer: TOKU-E Item Number: C289-50x1ML
Carbenicillin ReadyMade Solution 50 x 1 mL CAS number 4800-94-6 and purity ≥770 µg/mg (on dry basis)(Carbenicillin Disodium)...
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£140.17 £155.74
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Manufacturer: TOKU-E Item Number: C115-100MG
Carboplatin 100 mg CAS number 41575-94-4 and purity 98.0-102.0%...
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£141.13 £156.81
Manufacturer: TOKU-E Item Number: C115-250MG
Carboplatin 250 mg CAS number 41575-94-4 and purity 98.0-102.0%...
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£366.56 £407.29
Manufacturer: TOKU-E Item Number: C208-250MG
Carboxin 250 mg CAS number 5234-68-4 and purity ≥ 97.0%...
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£23.12 £25.69
Manufacturer: TOKU-E Item Number: C149-25MG
Carfilzomib 25 mg CAS number 868540-17-4 and purity ≥ 99.0%...
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£550.08 £611.20
Manufacturer: TOKU-E Item Number: C149-5MG
Carfilzomib 5 mg CAS number 868540-17-4 and purity ≥ 99.0%...
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£141.13 £156.81
Manufacturer: TOKU-E Item Number: C255-1MG
Carnaubadiol 1 mg CAS number 4547-30-2 and purity >99% by HPLC...
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£175.82 £195.35
Manufacturer: TOKU-E Item Number: C255-5MG
Carnaubadiol 5 mg CAS number 4547-30-2 and purity >99% by HPLC...
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£614.63 £682.92
Manufacturer: TOKU-E Item Number: C103-10MG
Caspofungin Acetate 10 mg CAS number 179463-17-3 and purity (As Is): 94.5-102.5%...
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£151.25 £168.05
Manufacturer: TOKU-E Item Number: C205-1MG
Cecropin A 1 mg CAS number 80451-04-3 and purity ≥ 98%...
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£317.91 £353.23
Manufacturer: TOKU-E Item Number: C206-1MG
Cecropin B 1 mg CAS number 80451-05-4 and purity ≥ 98%...
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£166.18 £184.64
Manufacturer: TOKU-E Item Number: C214-1MG
Cecropin P1 porcine 1 mg CAS number 125667-96-1 and purity ≥ 98.0%...
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£317.91 £353.23
Manufacturer: TOKU-E Item Number: C005-1G
Cefaclor, USP 1 g CAS number 70356-03-5 and purity (On Dried Basis): 950-1020 µg/mg...
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£139.20 £154.67
Manufacturer: TOKU-E Item Number: C005-250MG
Cefaclor, USP 250 mg CAS number 70356-03-5 and purity (On Dried Basis): 950-1020 µg/mg...
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£44.79 £49.77
Manufacturer: TOKU-E Item Number: C005-500MG
Cefaclor, USP 500 mg CAS number 70356-03-5 and purity (On Dried Basis): 950-1020 µg/mg...
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£73.70 £81.89
Manufacturer: TOKU-E Item Number: C119-1G
Cefadroxil 1g CAS number 50370-12-2 and purity (On Dried Basis): 950-1050 µg/mg...
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£67.91 £75.46
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