FLT Standards

Fluorescence lifetime (FLT) standards are used to calibrate or test the performance of time- and frequency-domain instrumentation for luminescence lifetime measurements [25].

		Excitation Light Sources												Characteristics
Product Number (Specs Sheet)	Product Name (Product Info)	380	405	436	488	532	594	635	650	680	700	750	780	Medium	λ abs [nm]	ε [M –1 cm–1]	λ em [nm]	QY [%]	FLT [ns]	Buy
KS-370 KS-370	330–405 nm FLT Standard 330–405 nm FLT Standard	•	•											PB 7.4	370		470	80	3.18
KS-650 KS-650	590–650 nm FLT Standard 590–650 nm FLT Standard							•						PB 7.4	647	250,000	665	27	1.05
KS-405 KS-405	370–420 nm FLT and FP Standard 370–420 nm FLT and FP Standard	•	•											Water	405		518		9.07

Below is a list of fluorescence lifetime standards that have single-exponential decays and can be used for calibration.

 

Characteristics of Fluorescence Lifetime (FLT) Standards

Product Number (Specs Sheet)	Lifetime Standard (Product Info)	Solvent	Lifetime at 25 oC [ns]	Excitation Range [nm]	Emission Range [nm]
KS-370	330-405 nm FLT Standard	Phosphate buffer pH 7.4	3.18±0.04	330–405	450–550
	p-Terphenyl	Ethanol	1.05	228-320	310-412
	PPO	Ethanol	1.4	280-350	330-480
KS-405	370–420 nm FLT and FP Standard	Water	9.07±0.03	370–420	490–590
	Anthranilic Acid	Ethanol	8.9	290	400
	POPOP
	Fluorescein, dianion	NaOH/Water	4±0.1	400	490-520
	Rhodamine B	Ethanol	1.7	500-565	583
	Texas Red	Ethanol	4.2	589	615
KS-550	Rose Bengal	Water	0.078±0.03	510–560	560–590
KS-650	590–650 nm FLT Standard	Phosphate buffer pH 7.4	0.98±0.03	590–650	660–710

 

Please contact us if you require additional information or for help with standards having different absorption, emission or lifetime properties.