LpDNPH Cartridges

LpDNPH cartridges are air-sampling media devices designated for sampling carbonyls (like formaldehyde) in ambient, indoor and industrial hygiene atmospheres. Carbonyls are trapped on a sampling cartridge containing high purity silica adsorbent coated with 2,4-dinitrophenylhydrazine (2,4-DNPH), where they are converted to the hydrazone derivatives. The derivatives are eluted from the cartridge with acetonitrile and analyzed by HPLC. Our LpDNPH cartridges are suitable for use for the following regulatory methods: NIOSH 2016, ASTM D5197, US EPA 100, IP-6A, and TO-11A.

LpDNPH cartridge benefits:
  • High purity adsorbent for better accuracy and trace analysis
  • High sensitivity and low background
  • Low pressure drop, enables use of high sampling rates (1.5-2 L/min)
  • Certificate of Analysis by *lot number packaged in every box.
  • Low background packaging for maximum sample integrity
  • Manufactured in low-carbonyl environment
  • Meets NIOSH, OSHA, EPA, and ASTM specifications
  • Typical shelf life 12 months
*Every lot of LpDNPH is tested for background contamination, an actual COA is included in the box, not a "representative" QA test
Left to Right: S10x, S10L, S10, H10, H30, H300

LpDNPH Rezorian Cartridges

Rezorian cartridges are made of polypropylene with polyethylene frits. The end fittings are luer lock syringe connections that can be used to connect a pump tubing or two cartridges in a series (piggybacked) to monitor breakthrough or to increase capacity.

Product #

Description

Add to Cart

54074-U LpDNPH Rezorian Cartridge bed wt. 350 mg, volume 3 mL, pkg of 10 ea
54075-U LpDNPH Rezorian Cartridge bed wt. 350 mg, volume 3 mL, pkg of 50 ea

LpDNPH S10 Cartridges

The syringe barrel design of the S10 cartridge makes it easy to use in the field and laboratory. Reusable adapters are available for connecting the cartridge to the sampling pump. The built-in reservoir eliminates the need to attach a syringe for sample extraction/elution. The S10x cartridge is shorter than the S10 cartridge and is designed to fit in automated systems such as the XonTech 920/924 instrument.

Product #

Description

Add to Cart

21014 LpDNPH S10 Cartridge bed wt. 350 mg, volume 3 mL, pkg of 50 ea
21026-U LpDNPH S10 Cartridge bed wt. 350 mg, volume 3 mL
21024-U LpDNPH S10 Cartridge Starter Kit, bed wt. 350 mg, volume 3 mL
54072-U LpDNPH S10 Cartridge bed wt. 350 mg, volume 3 mL
505293 LpDNPH S10x Cartridge bed wt. 350 mg, volume 1.5 mL

LpDNPH S10L Cartridges

The S10L cartridge offers a reversible design and is for analysts who prefer shorter dimensions and does not need an adapter for sampling. The cartridge is eluted by connecting to a syringe barrel (empty SPE-style tube) that acts as a reservoir for gravity-fed elution solvent. Meets EPA TO-11A requirements.

Product #

Description

Add to Cart

505358 LpDNPH S10L Cartridge bed wt. 350 mg, volume 1 mL
505361-U LpDNPH S10L Cartridge volume 1 mL

LpDNPH H Series Cartridges

The H series of LpDNPH cartridges contain higher loadings of 2,4-DNPH and/or larger bed weights compared to the S10 cartridges. This provides higher capacity for carbonyls making the H series cartridges the preferred choice for use in high concentration environments. The H series is available in H10 (350 mg), H30 (1 g) and H300 (10 g) cartridges.

Product #

Description

Add to Cart

505315 LpDNPH H Series Cartridges H10, volume 3 mL
505320-U LpDNPH H Series Cartridges H10, bed wt. 350 mg, volume 3 mL
505323 LpDNPH H Series Cartridges H30, bed wt. 1 g, volume 6 mL
505331 LpDNPH H Series Cartridges H300, bed wt. 10 g, volume 20 mL

LpDNPH Sorbent Tubes (ORBO)

The single-bed ORBO-DNPH tube contains 120 mg of high purity 2,4-DNPH packed into a 6 mm O.D. x 90 mm Long glass sorbent tube with a break seal "frangible" at both ends. The ORBO-555 and ORBO-558 LpDNPH Tubes both contain two beds packed with high purity LpDNPH with a front bed of 300-mg and a back-up bed of 150-mg. (NIOSH 2016 Appendix B). The ORBO-555 is a 6 mm O.D. tube suitable for sampling at lower flow ranges up to 0.4L/min, and the ORBO-558 is an 8 mm tube which extends the flowrate range up to 2.0L/min.

Product #

Description

Add to Cart

54020-U ORBO 555 LpDNPH 300/150 mg Sorbent Tube W,W,W separators, O.D. × L 6 mm × 105 mm, pkg of 20 ea
54081-U ORBO558 LpDNPH 300/150 mg Sorbent Tube W,W,W separators, glass tube size × L 8 mm × 115 mm, pkg of 20 ea
20081-U ORBO-DNPH LpDNPH on Silica Gel, 120 mg PE separators, O.D. × L 6 mm × 90 mm , w/frangible seal, pk of 10 tubes

Ozone Scrubbers

Our ozone scrubber comes in two different designs-a reversible design like the S10L cartridge and a rezorian design. Each style contains 1.5 grams of high purity potassium iodide (KI). The KI traps the ozone, which causes a negative formaldehyde interference in DNPH-coated devices. The luer end-fittings enable the user to connect these cartridges directly to the inlet of any DNPH cartridge with a luer tip. Testing at 200 ppb ozone, 50% RH, 25 deg C, has shown that the scrubber to have an ozone capacity at 100,000 ppb/hr.

Product #

Description

Add to Cart

505285 LpDNPH Ozone Scrubber S10L (Reversible Cartridge), Potassium Iodide (KI) 1.5 g, pkg of 10 ea
54078-U LpDNPH Ozone Scrubber Rezorian Cartridge, Potassium Iodide (KI) 1.5 g