Semrock & Chroma equivalents

Closest published brand part for each of our filters, with the key specification differences stated plainly. Our 5+ unit prices are about half (typically 35–45%) of the published list price of the closest brand part; single-unit prices are higher. Brand parts are premium products — choose what fits your application.

Our filters compared to the closest Semrock and Chroma parts
Our SKU	Closest Semrock part	Closest Chroma part	Our key specs	Key differences (honest notes)
DX-SET-DAPI DAPI fluorescence filter set	DAPI-5060C-000	49000 ET-DAPI	Exciter: 365/40 nm (CWL 365 nm, bandwidth 40 nm); T 90%; OD6; blocking 200–800 nm Emitter: 470/30 nm (CWL 470 nm, bandwidth 30 nm); T 92%; OD6; blocking 200–900 nm Dichroic: Long-pass 410 nm; reflects 350–390 nm (R > 90%); transmits 420–750 nm (T > 90%) Typical measured (from curve): 50% points: exciter ≈ 344–382 nm; emitter ≈ 454–483 nm; dichroic edge ≈ 412 nm	Cube format must match your microscope (Nikon / Olympus / Zeiss / Leica). A version with a long-pass emitter is also available on request.
DX-SET-GFP GFP / FITC / FAM fluorescence filter set	GFP-3035D-000	49002 ET-EGFP (FITC/Cy2)	Exciter: 470/30 nm Emitter: 525/20 nm Dichroic: Long-pass 490 nm Blocking: OD6; OD7 excitation/emission cross-blocking Typical measured (from curve): 50% points: exciter ≈ 456–489 nm; emitter ≈ 515–537 nm; dichroic edge ≈ 502 nm; passband T ≈ 93–99%	Cube format must match your microscope.
DX-SET-TRITC TRITC / Cy3 fluorescence filter set	Cy3-4040C-000 / TRITC-B	49004 ET-Cy3/TRITC	Exciter: 543/20 nm (CWL 543 nm, bandwidth 20 nm); T 95%; OD6; blocking 200–900 nm Emitter: 585/20 nm (CWL 585 nm, bandwidth 20 nm); T 95%; OD6; blocking 200–900 nm Cross-blocking: OD7 (exciter vs emitter) Dichroic: Long-pass 560 nm; reflects 500–550 nm (R 95%); transmits 570–800 nm (T 95%) Typical measured (from curve): 50% points: exciter ≈ 531–553 nm; emitter ≈ 572–594 nm; dichroic edge ≈ 560 nm	Cube format must match your microscope.
DX-SET-A488 Alexa Fluor 488 fluorescence filter set	FITC-5050A-000	49002 ET-EGFP (FITC/Cy2)	Exciter: 480/30 nm Emitter: 527/20 nm Dichroic: Long-pass 495 nm Blocking: OD6 Typical measured (from curve): 50% points: exciter ≈ 466–497 nm; emitter ≈ 515–544 nm; dichroic edge ≈ 504 nm; passband T ≈ 92–97%	Cube format must match your microscope.
DX-SET-ICG ICG (indocyanine green) fluorescence filter set	ICG-B-000	—	Exciter: 770/50 nm (CWL 770 nm, bandwidth 50 nm); T 90%; OD6; blocking 200–900 nm Emitter: 845/50 nm (CWL 845 nm, bandwidth 50 nm); T 90%; OD6; blocking 200–900 nm Dichroic: Long-pass 800 nm; reflects 630–790 nm (R 90%); transmits 820–1000 nm (T 90%) Typical measured (from curve): 50% points: exciter ≈ 741–788 nm; emitter ≈ 819–872 nm; dichroic edge ≈ 811 nm	No directly comparable Chroma set listed in our reference data.
DX-SET-TXR-E Texas Red / ROX economy fluorescence filter set	TxRed-4040C-000	49008 ET-mCherry/Texas Red	Blocking: OD5 (economy grade) Typical measured (from curve): Exciter ≈ 560–581 nm at 50% (peak T ≈ 90%); emitter ≈ 621–647 nm at 50% (peak T ≈ 95%); dichroic long-pass edge ≈ 595 nm	Economy set with OD5 blocking. The dichroic shows some transmission below 545 nm (see curve) — compare blocking with the brand sets if you image very weak signals.
DX-BP405-10-25 405/10 nm laser-line bandpass filter	FF01-405/10-25	ET405/10x	Center wavelength (CWL): 405 nm Bandwidth (FWHM): 10 nm Peak transmission: 85% Blocking: OD5 Size: Ø25.4 × 6 mm, mounted in ring Typical measured (from curve): Peak T ≈ 90%; 50% points ≈ 401–410 nm	Semrock FF01-405/10-25 publishes FWHM 14.1 nm (10 nm guaranteed minimum bandwidth) and Tavg >87% (400–410 nm), OD>5, Ø25 × 3.5 mm. Ours: 10 nm FWHM, specified T 85% (typical measured peak ≈ 90%), OD5 — narrower passband, thicker 6 mm mount (check holder depth).
DX-BP488-10-25 488/10 nm laser-line bandpass filter	FF01-488/10-25	ZET488/10x	Center wavelength (CWL): 488 nm Bandwidth (FWHM): 10 nm Peak transmission: 90% Blocking: OD5 Blocking range: 200–1100 nm Size: Ø25.4 × 6 mm, mounted in ring Typical measured (from curve): Peak T ≈ 94%; 50% points ≈ 485–493 nm	Semrock FF01-488/10-25 publishes Tavg >93% (483–493 nm), OD>4, FWHM 15.1 nm. Ours: specified T 90% (typical measured peak ≈ 94%), OD5 — higher stated blocking, narrower passband.
DX-BP400-40-25 400/40 nm bandpass filter	FF01-400/40-25	—	Center wavelength (CWL): 400 nm Bandwidth (FWHM): 40 nm Peak transmission: 90% Blocking: OD5 Blocking range: 200–1100 nm Size: Ø25.4 × 6 mm, mounted in ring Typical measured (from curve): Peak T ≈ 98%; 50% points ≈ 376–419 nm	Semrock FF01-400/40-25 publishes Tavg >90% (380–420 nm) and OD>6. Ours: specified T 90% (typical measured plateau ≈ 97%), OD5 — Semrock specifies one OD more blocking.
DX-DI785R-25x36 785 nm Raman dichroic beamsplitter	LPD02-785RU-25x36	RT785rdc	Laser line: 785 nm Reflection: R 99% @ 785 nm Transmission band: 805–890 nm Edge (50% transmission): ≈ 798 nm (typical measured) Typical measured (from curve): T ≈ 97–99.7% from 805 to 890 nm; T ≈ 0.6% at 785 nm Size: 25.2 × 35.6 × 1 mm	Chroma RT785rdc is 25.5 × 36 × 1 mm; ours is 25.2 × 35.6 × 1 mm — confirm fit in your holder. Measured edge ≈ 798 nm (50% T); AOI data on request.
DX-DI685LP-25x36 685 nm long-pass dichroic beamsplitter	FF685-Di02-25x36	T685lpxr	Edge wavelength: 685 nm (long-pass) Reflection band: 610–660 nm (high reflection) Transmission band: 700–800 nm (high transmission) Typical measured (from curve): T ≈ 90–94% from 700 to 800 nm; T < 1% from 610 to 660 nm; 50% edge ≈ 685 nm Size: 25.2 × 35.6 × 1 mm	Semrock FF685-Di02-25x36 publishes R>98% (350–676 nm) and T>93% (695–950 nm) — a wider specified range than ours (HR 610–660 nm, HT 700–800 nm). Chroma T685lpxr is 25.5 × 36 mm.

Curves: Typical measured transmission (manufacturer data, redrawn). Lot-specific test report supplied with each order. “Closest part” means the nearest published equivalent by wavelength and function; it does not imply identical performance. Brand specifications are quoted from their public product pages as published at the time of writing — check the brand's current datasheet for the latest values.

Looking for an alternative to a specific part number?

Dichroptics DX-SET-DAPI — alternative to Semrock DAPI-5060C-000 and Chroma 49000 ET-DAPI (DAPI)
Dichroptics DX-SET-GFP — alternative to Semrock GFP-3035D-000 and Chroma 49002 ET-EGFP (FITC/Cy2) (GFP/FITC)
Dichroptics DX-SET-TRITC — alternative to Semrock Cy3-4040C-000 / TRITC-B and Chroma 49004 ET-Cy3/TRITC (TRITC/Cy3)
Dichroptics DX-SET-A488 — alternative to Semrock FITC-5050A-000 and Chroma 49002 ET-EGFP (FITC/Cy2) (Alexa 488)
Dichroptics DX-SET-ICG — alternative to Semrock ICG-B-000 (ICG)
Dichroptics DX-SET-TXR-E — alternative to Semrock TxRed-4040C-000 and Chroma 49008 ET-mCherry/Texas Red (Texas Red)
Dichroptics DX-BP405-10-25 — alternative to Semrock FF01-405/10-25 and Chroma ET405/10x (405/10)
Dichroptics DX-BP488-10-25 — alternative to Semrock FF01-488/10-25 and Chroma ZET488/10x (488/10)
Dichroptics DX-BP400-40-25 — alternative to Semrock FF01-400/40-25 (400/40)
Dichroptics DX-DI785R-25x36 — alternative to Semrock LPD02-785RU-25x36 and Chroma RT785rdc (785 Raman)
Dichroptics DX-DI685LP-25x36 — alternative to Semrock FF685-Di02-25x36 and Chroma T685lpxr (685 LP)

Semrock and Chroma are trademarks of their respective owners; comparisons are based on published specifications. Dichroptics is not affiliated with, endorsed by, or sponsored by either company.

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