Pardon our dust — this new website is under construction. Please Contact Us if you run into any issues.
Free Shipping on Equipment & Parts orders over $200! * Click for Restrictions

Have a question? 800-440-6723 International: 803-252-0100

English Se habla español
0 items ( $0.00 )
View the Full Cart
Product Filter
Availability
Machine Type
Manufacturer
Shipping Designation

Need Assistance?

We are here to help.

Call 1.800-440-6723 International: 803-252-0100

Pullman Holt Parts

649 items, 100 per page
Filter
Pullman Holt - 201000200A - Tank Kit (S36)
Pullman Holt - 201000200A - Tank Kit (S36)

p/n: PH201000200A

Tank Kit (S36)

$833.84/EA
Pullman Holt - 201000201 - Motor Top Cover Kit (S36)
Pullman Holt - 201000201 - Motor Top Cover Kit (S36)

p/n: PH201000201

Motor Top Cover Kit (S36)

$476.40/EA
Pullman Holt - 201000203 - Top Cover Middle Hose Kit (S36 )
Pullman Holt - 201000203 - Top Cover Middle Hose Kit (S36 )

p/n: PH201000203

Top Cover Middle Hose Kit (S36 )

$44.99/EA
Pullman Holt - 201000204 - Top Cover Hose L/R Kit (S36)
Pullman Holt - 201000204 - Top Cover Hose L/R Kit (S36)

p/n: PH201000204

Top Cover Hose L/R Kit (S36)

$44.99/EA
Pullman Holt - 201000205 - Motor Front Cover Kit (S36)
Pullman Holt - 201000205 - Motor Front Cover Kit (S36)

p/n: PH201000205

Motor Front Cover Kit (S36)

$67.59/EA
Pullman Holt - 201000206 - Handle Grip Kit (S36)
Pullman Holt - 201000206 - Handle Grip Kit (S36)

p/n: PH201000206

Handle Grip Kit (S36)

$12.98/EA
Pullman Holt - 201000207 - Screw And Nut Kit (S36)
Pullman Holt - 201000207 - Screw And Nut Kit (S36)

p/n: PH201000207

Screw And Nut Kit (S36)

$16.22/EA
Pullman Holt - 201000208 - Air Outlet Kit (S36)
Pullman Holt - 201000208 - Air Outlet Kit (S36)

p/n: PH201000208

Air Outlet Kit (S36)

$33.74/EA
Pullman Holt - 201000209 - Wagon Kit (S36)
Pullman Holt - 201000209 - Wagon Kit (S36)

p/n: PH201000209

Wagon Kit (S36)

$817.07/EA
Pullman Holt - 201000210 - Terminal Block Kit (S36)
Pullman Holt - 201000210 - Terminal Block Kit (S36)

p/n: PH201000210

Terminal Block Kit (S36)

$11.36/EA
Pullman Holt - 201000211 - Grounding Screw Kit (S-Line)
Pullman Holt - 201000211 - Grounding Screw Kit (S-Line)

p/n: PH201000211

Grounding Screw Kit (S-Line)

$3.24/EA
Pullman Holt - 201000212 - Motor Cover Kit (S36)
Pullman Holt - 201000212 - Motor Cover Kit (S36)

p/n: PH201000212

Motor Cover Kit (S36)

$307.15/EA
Pullman Holt - 201000213 - Counter Screw Kit (S-Line)
Pullman Holt - 201000213 - Counter Screw Kit (S-Line)

p/n: PH201000213

Counter Screw Kit (S-Line)

$3.24/EA
Pullman Holt - 201000233 - "Gasket Camlock 3"" Female"
Pullman Holt - 201000233 - "Gasket Camlock 3"" Female"

p/n: PH201000233

"Gasket Camlock 3"" Female"

$26.28/EA
Pullman Holt - 201000349 - Camlock Male Rings
Pullman Holt - 201000349 - Camlock Male Rings

p/n: PH201000349

Camlock Male Rings

$50.83/EA
Pullman Holt - 201000492 - "Hose Cuff Connector 2"" Femal "Treaded To 1 1/2"" Male Slide
Pullman Holt - 201000492 - "Hose Cuff Connector 2"" Femal "Treaded To 1 1/2"" Male Slide

p/n: PH201000492

"Hose Cuff Connector 2"" Femal "Treaded To 1 1/2"" Male Slide

$9.19/EA
Pullman Holt - 201000542 - "Hose 2"" X 25' S26"
Pullman Holt - 201000542 - "Hose 2"" X 25' S26"

p/n: PH201000542

"Hose 2"" X 25' S26"

$110.28/EA
Pullman Holt - 201000560 - "Hose 1.4"" X 16'"
Pullman Holt - 201000560 - "Hose 1.4"" X 16'"

p/n: PH201000560

"Hose 1.4"" X 16'"

$125.45/EA
Pullman Holt - 201000561 - "3-Piece Steel Wand 1.4"""
Pullman Holt - 201000561 - "3-Piece Steel Wand 1.4"""

p/n: PH201000561

"3-Piece Steel Wand 1.4"""

$102.74/EA
Pullman Holt - 201000562 - "Crevice Tool .9"""
Pullman Holt - 201000562 - "Crevice Tool .9"""

p/n: PH201000562

"Crevice Tool .9"""

$11.14/EA
Pullman Holt - 201000563 - "Floor Tool 1.4"" X 14.4"""
Pullman Holt - 201000563 - "Floor Tool 1.4"" X 14.4"""

p/n: PH201000563

"Floor Tool 1.4"" X 14.4"""

$60.56/EA
Pullman Holt - 201000590 - "Connector 2 1/2"" To 3"" Flat
Pullman Holt - 201000590 - "Connector 2 1/2"" To 3"" Flat

p/n: PH201000590

"Connector 2 1/2"" To 3"" Flat

$33.58/EA
Pullman Holt - 201000666 - "Receptacle 250V 30Amp, L6-30 S36)
Pullman Holt - 201000666 - "Receptacle 250V 30Amp, L6-30 S36)

p/n: PH201000666

"Receptacle 250V 30Amp, L6-30 S36)

$189.05/EA
Pullman Holt - 201000670 - Cleaning Unit Plastic Cover Ki T (S-Line)
Pullman Holt - 201000670 - Cleaning Unit Plastic Cover Ki T (S-Line)

p/n: PH201000670

Cleaning Unit Plastic Cover Ki T (S-Line)

$29.85/EA
Pullman Holt - 201000671 - T4000 230V 3 Phase
Pullman Holt - 201000671 - T4000 230V 3 Phase

p/n: PH201000671

T4000 230V 3 Phase

$7,107.00/EA
Pullman Holt - 201000671A - T4000 400V
Pullman Holt - 201000671A - T4000 400V

p/n: PH201000671A

T4000 400V

$11,680.20/EA
Pullman Holt - 201000671C - T4000 230 V Distrubition
Pullman Holt - 201000671C - T4000 230 V Distrubition

p/n: PH201000671C

T4000 230 V Distrubition

$7,714.70/EA
Pullman Holt - 201000800 - Silencer Kit
Pullman Holt - 201000800 - Silencer Kit

p/n: PH201000800

Silencer Kit

$48.67/EA
Pullman Holt - 201000801 - "2"" Hose Connector Turned"
Pullman Holt - 201000801 - "2"" Hose Connector Turned"

p/n: PH201000801

"2"" Hose Connector Turned"

$10.47/EA
Pullman Holt - 201000831 - Wagon Kit (S26)
Pullman Holt - 201000831 - Wagon Kit (S26)

p/n: PH201000831

Wagon Kit (S26)

$288.76/EA
Pullman Holt - 2011000246 - Hose 1.5' X 6'
Pullman Holt - 2011000246 - Hose 1.5' X 6'

p/n: PH2011000246

Hose 1.5' X 6'

$15.14/EA
Pullman Holt - 201100025A - "Pu76 D=76 Mm L=10 M, No Hose Ndings
Pullman Holt - 201100025A - "Pu76 D=76 Mm L=10 M, No Hose Ndings

p/n: PH201100025A

"Pu76 D=76 Mm L=10 M, No Hose Ndings

$397.99/EA
Pullman Holt - 201100028 - Contactor T12600
Pullman Holt - 201100028 - Contactor T12600

p/n: PH201100028

Contactor T12600

$559.57/EA
Pullman Holt - 201100081 - Electric Power Head
Pullman Holt - 201100081 - Electric Power Head

p/n: PH201100081

Electric Power Head

$85.44/EA
Pullman Holt - 201100101 - Twist-Lock Plug 30A 250V (S36A )
Pullman Holt - 201100101 - Twist-Lock Plug 30A 250V (S36A )

p/n: PH201100101

Twist-Lock Plug 30A 250V (S36A )

$71.05/EA
Pullman Holt - 201100125 - Hose End Kit (S-Line)
Pullman Holt - 201100125 - Hose End Kit (S-Line)

p/n: PH201100125

Hose End Kit (S-Line)

$5.67/EA
Pullman Holt - 201100127 - Filter Housing Top Sealing Kit (S-Line)
Pullman Holt - 201100127 - Filter Housing Top Sealing Kit (S-Line)

p/n: PH201100127

Filter Housing Top Sealing Kit (S-Line)

$10.71/EA
Pullman Holt - 201100128 - Thumb Nut Kit (S-Line)
Pullman Holt - 201100128 - Thumb Nut Kit (S-Line)

p/n: PH201100128

Thumb Nut Kit (S-Line)

$9.52/EA
Pullman Holt - 201100129 - Counter Cover Kit (S-Line)
Pullman Holt - 201100129 - Counter Cover Kit (S-Line)

p/n: PH201100129

Counter Cover Kit (S-Line)

$5.95/EA
Pullman Holt - 201100135 - Longopac Holder Kit - Twist Lo Ck
Pullman Holt - 201100135 - Longopac Holder Kit - Twist Lo Ck

p/n: PH201100135

Longopac Holder Kit - Twist Lo Ck

$75.71/EA
Pullman Holt - 201100137 - Hose Clamp Kit (S-Line)
Pullman Holt - 201100137 - Hose Clamp Kit (S-Line)

p/n: PH201100137

Hose Clamp Kit (S-Line)

$6.16/EA
Pullman Holt - 201100138 - Handle Grip Kit (S13)
Pullman Holt - 201100138 - Handle Grip Kit (S13)

p/n: PH201100138

Handle Grip Kit (S13)

$4.54/EA
Pullman Holt - 201100139 - Hose Locking Pin Kit (S-Line)
Pullman Holt - 201100139 - Hose Locking Pin Kit (S-Line)

p/n: PH201100139

Hose Locking Pin Kit (S-Line)

$6.71/EA
Pullman Holt - 201100140 - Belt Kit (S-Line)
Pullman Holt - 201100140 - Belt Kit (S-Line)

p/n: PH201100140

Belt Kit (S-Line)

$22.31/EA
Pullman Holt - 201100141 - Bag Retainer Strip (S-Line)
Pullman Holt - 201100141 - Bag Retainer Strip (S-Line)

p/n: PH201100141

Bag Retainer Strip (S-Line)

$7.89/EA
Pullman Holt - 201100144 - Motor Tube -W. Vacuum Connecto R Kit (S-Line)
Pullman Holt - 201100144 - Motor Tube -W. Vacuum Connecto R Kit (S-Line)

p/n: PH201100144

Motor Tube -W. Vacuum Connecto R Kit (S-Line)

$370.41/EA
Pullman Holt - 201100144A - Motor Tube Kit - W. Vacuum Con Nector (S-Line)
Pullman Holt - 201100144A - Motor Tube Kit - W. Vacuum Con Nector (S-Line)

p/n: PH201100144A

Motor Tube Kit - W. Vacuum Con Nector (S-Line)

$377.44/EA
Pullman Holt - 201100146 - Motor Package Kit (S13 230V)
Pullman Holt - 201100146 - Motor Package Kit (S13 230V)

p/n: PH201100146

Motor Package Kit (S13 230V)

$887.37/EA
Pullman Holt - 201100146A - Motor Package Kit (S13 120V)
Pullman Holt - 201100146A - Motor Package Kit (S13 120V)

p/n: PH201100146A

Motor Package Kit (S13 120V)

$887.37/EA
Pullman Holt - 201100147 - Cable Kit (S13 230V)
Pullman Holt - 201100147 - Cable Kit (S13 230V)

p/n: PH201100147

Cable Kit (S13 230V)

$23.25/EA
Pullman Holt - 201100148 - Manometer Hole Cover (S-Line)
Pullman Holt - 201100148 - Manometer Hole Cover (S-Line)

p/n: PH201100148

Manometer Hole Cover (S-Line)

$2.16/EA
Pullman Holt - 201100149 - Power Cord Kit (S26120V With 2 0Amp Plug)
Pullman Holt - 201100149 - Power Cord Kit (S26120V With 2 0Amp Plug)

p/n: PH201100149

Power Cord Kit (S26120V With 2 0Amp Plug)

$43.26/EA
Pullman Holt - 201100150 - Cable Strain Relief (S-Line 23 0V)
Pullman Holt - 201100150 - Cable Strain Relief (S-Line 23 0V)

p/n: PH201100150

Cable Strain Relief (S-Line 23 0V)

$6.71/EA
Pullman Holt - 201100151 - Switch Kit On/Off Lighted 25A (S-Line)
Pullman Holt - 201100151 - Switch Kit On/Off Lighted 25A (S-Line)

p/n: PH201100151

Switch Kit On/Off Lighted 25A (S-Line)

$24.55/EA
Pullman Holt - 201100152 - Motor Tube -W/O Vacuum Connect Or Kit (S-Line)
Pullman Holt - 201100152 - Motor Tube -W/O Vacuum Connect Or Kit (S-Line)

p/n: PH201100152

Motor Tube -W/O Vacuum Connect Or Kit (S-Line)

$370.41/EA
Pullman Holt - 201100152A - Motor Tube Kit - W/O Vacuum Co Nnector (S-Line)
Pullman Holt - 201100152A - Motor Tube Kit - W/O Vacuum Co Nnector (S-Line)

p/n: PH201100152A

Motor Tube Kit - W/O Vacuum Co Nnector (S-Line)

$370.41/EA
Pullman Holt - 201100157 - Cable Kit (S26 230V)
Pullman Holt - 201100157 - Cable Kit (S26 230V)

p/n: PH201100157

Cable Kit (S26 230V)

$65.76/EA
Pullman Holt - 201100157A - Cable Kit (S26 120V)
Pullman Holt - 201100157A - Cable Kit (S26 120V)

p/n: PH201100157A

Cable Kit (S26 120V)

$68.70/EA
Pullman Holt - 201100158 - Electrical Filter Kit (S26/S36 230V)-- REPLACED BY 548068901
Pullman Holt - 201100158 - Electrical Filter Kit (S26/S36 230V)-- REPLACED BY 548068901

p/n: PH201100158

Electrical Filter Kit (S26/S36 230V)

$0.00/EA
Pullman Holt - 201100160 - Top Cover Kit (S36)
Pullman Holt - 201100160 - Top Cover Kit (S36)

p/n: PH201100160

Top Cover Kit (S36)

$371.17/EA
Pullman Holt - 201100161 - Motor Insulation Kit (S36)
Pullman Holt - 201100161 - Motor Insulation Kit (S36)

p/n: PH201100161

Motor Insulation Kit (S36)

$21.63/EA
Pullman Holt - 201100163 - Motor Cover Bottom Sealing Kit (S36)
Pullman Holt - 201100163 - Motor Cover Bottom Sealing Kit (S36)

p/n: PH201100163

Motor Cover Bottom Sealing Kit (S36)

$34.07/EA
Pullman Holt - 201100164 - Manometer Hose Kit (S-Line)
Pullman Holt - 201100164 - Manometer Hose Kit (S-Line)

p/n: PH201100164

Manometer Hose Kit (S-Line)

$5.62/EA
Pullman Holt - 201100165 - Sound Insulation Kit (S36)
Pullman Holt - 201100165 - Sound Insulation Kit (S36)

p/n: PH201100165

Sound Insulation Kit (S36)

$50.83/EA
Pullman Holt - 201100167 - Motor Cover Kit (S36)
Pullman Holt - 201100167 - Motor Cover Kit (S36)

p/n: PH201100167

Motor Cover Kit (S36)

$453.69/EA
Pullman Holt - 201100167A - Motor Cover Kit (S36 32A Outle T)
Pullman Holt - 201100167A - Motor Cover Kit (S36 32A Outle T)

p/n: PH201100167A

Motor Cover Kit (S36 32A Outle T)

$510.47/EA
Pullman Holt - 201100169 - Motor Box Incl. Motor Kit (S36 )
Pullman Holt - 201100169 - Motor Box Incl. Motor Kit (S36 )

p/n: PH201100169

Motor Box Incl. Motor Kit (S36 )

$1,344.30/EA
Pullman Holt - 201100170 - Filter Housing Sealing Kit (S3 6)
Pullman Holt - 201100170 - Filter Housing Sealing Kit (S3 6)

p/n: PH201100170

Filter Housing Sealing Kit (S3 6)

$49.75/EA
Pullman Holt - 201100171 - Motor Box Kit (S36)
Pullman Holt - 201100171 - Motor Box Kit (S36)

p/n: PH201100171

Motor Box Kit (S36)

$388.26/EA
Pullman Holt - 201100172 - Motor Box Outlet Sealing Kit ( S36)
Pullman Holt - 201100172 - Motor Box Outlet Sealing Kit ( S36)

p/n: PH201100172

Motor Box Outlet Sealing Kit ( S36)

$8.11/EA
Pullman Holt - 201100173 - Motor Box Sealing Kit (S36)
Pullman Holt - 201100173 - Motor Box Sealing Kit (S36)

p/n: PH201100173

Motor Box Sealing Kit (S36)

$17.41/EA
Pullman Holt - 201100174 - Support Pin Kit Upper (S36)
Pullman Holt - 201100174 - Support Pin Kit Upper (S36)

p/n: PH201100174

Support Pin Kit Upper (S36)

$84.36/EA
Pullman Holt - 201100175 - Support Pin Kit Lower (S36)
Pullman Holt - 201100175 - Support Pin Kit Lower (S36)

p/n: PH201100175

Support Pin Kit Lower (S36)

$84.36/EA
Pullman Holt - 201100176 - Filter Housing Kit (S-Line)
Pullman Holt - 201100176 - Filter Housing Kit (S-Line)

p/n: PH201100176

Filter Housing Kit (S-Line)

$84.36/EA
Pullman Holt - 201100177 - Motor Sealing Kit (S36)
Pullman Holt - 201100177 - Motor Sealing Kit (S36)

p/n: PH201100177

Motor Sealing Kit (S36)

$35.47/EA
Pullman Holt - 201100244 - Hepa Filter Assembly
Pullman Holt - 201100244 - Hepa Filter Assembly

p/n: PH201100244

Hepa Filter Assembly

$135.19/EA
Pullman Holt - 201100248 - Bag Retainer Device
Pullman Holt - 201100248 - Bag Retainer Device

p/n: PH201100248

Bag Retainer Device

$3.24/EA
Pullman Holt - 201100259 - Aluminum Telescopic Wand
Pullman Holt - 201100259 - Aluminum Telescopic Wand

p/n: PH201100259

Aluminum Telescopic Wand

$25.96/EA
Pullman Holt - 201100290 - Motor Inlet Filter
Pullman Holt - 201100290 - Motor Inlet Filter

p/n: PH201100290

Motor Inlet Filter

$1.62/EA
Pullman Holt - 201100302 - Wheel Protection Bag Kit (S-Li Ne) 10-Pk
Pullman Holt - 201100302 - Wheel Protection Bag Kit (S-Li Ne) 10-Pk

p/n: PH201100302

Wheel Protection Bag Kit (S-Li Ne) 10-Pk

$21.95/EA
Pullman Holt - 201100474A - Top Cover C3000 New Style
Pullman Holt - 201100474A - Top Cover C3000 New Style

p/n: PH201100474A

Top Cover C3000 New Style

$333.86/EA
Pullman Holt - 201100478 - Front Wheel Kit C3000
Pullman Holt - 201100478 - Front Wheel Kit C3000

p/n: PH201100478

Front Wheel Kit C3000

$39.37/EA
Pullman Holt - 201200010 - "Dust Shroud 7"" Hand Grinder"
Pullman Holt - 201200010 - "Dust Shroud 7"" Hand Grinder"

p/n: PH201200010

"Dust Shroud 7"" Hand Grinder"

$109.00/EA
Pullman Holt - 201200020 - Overload Relays 480V 16Amp (Ol D Style)
Pullman Holt - 201200020 - Overload Relays 480V 16Amp (Ol D Style)

p/n: PH201200020

Overload Relays 480V 16Amp (Ol D Style)

$284.98/EA
Pullman Holt - 201200062 - Wheel Solid T8600/T7500 W/Caps
Pullman Holt - 201200062 - Wheel Solid T8600/T7500 W/Caps

p/n: PH201200062

Wheel Solid T8600/T7500 W/Caps

$144.06/EA
Pullman Holt - 201200228 - 20 Amp Plug (S26) 120V
Pullman Holt - 201200228 - 20 Amp Plug (S26) 120V

p/n: PH201200228

20 Amp Plug (S26) 120V

$41.64/EA
no image
Pullman Holt - 201200248 - Plug Kit For NEMA 5-15P (Replaced by Husqvarna Part 590462001)

p/n: PH201200248

Plug Kit For NEMA 5-15P (Replaced by Husqvarna Part 590462001)

$63.31/EA
no image
Pullman Holt - 201200250 - Cable Kit NEMA 5-15P to NEMA 5-15R (Replaced by Husqvarna Part 590462101)

p/n: PH201200250

Cable Kit NEMA 5-15P to NEMA 5-15R (Replaced by Husqvarna Part 590462101)

$106.00/EA
Pullman Holt - 201300082 - Motor Ametek 120V 60Hz 800W
Pullman Holt - 201300082 - Motor Ametek 120V 60Hz 800W

p/n: PH201300082

Motor Ametek 120V 60Hz 800W

$279.68/EA
Pullman Holt - 201300090 - Motor Cooling Fan Blade (T8600 )
Pullman Holt - 201300090 - Motor Cooling Fan Blade (T8600 )

p/n: PH201300090

Motor Cooling Fan Blade (T8600 )

$29.52/EA
Pullman Holt - 201300096 - Hepa Filter W350P/W70P
Pullman Holt - 201300096 - Hepa Filter W350P/W70P

p/n: PH201300096

Hepa Filter W350P/W70P

$114.26/EA
Pullman Holt - 201300403 - T15000 230V 3 Phase
Pullman Holt - 201300403 - T15000 230V 3 Phase

p/n: PH201300403

T15000 230V 3 Phase

$17,407.00/EA
Pullman Holt - 201300408 - T10000 480V W/ 50 Amp Dist Box
Pullman Holt - 201300408 - T10000 480V W/ 50 Amp Dist Box

p/n: PH201300408

T10000 480V W/ 50 Amp Dist Box

$14,935.00/EA
Pullman Holt - 201300428 - Main Contactor (T4000 230V)..
Pullman Holt - 201300428 - Main Contactor (T4000 230V)..

p/n: PH201300428

Main Contactor (T4000 230V)..

$130.21/EA
Pullman Holt - 201300430 - Overload Relay (T4000 230V)
Pullman Holt - 201300430 - Overload Relay (T4000 230V)

p/n: PH201300430

Overload Relay (T4000 230V)

$113.09/EA
Pullman Holt - 201300436 - Pre-Filter Sock Assembly T1000 0
Pullman Holt - 201300436 - Pre-Filter Sock Assembly T1000 0

p/n: PH201300436

Pre-Filter Sock Assembly T1000 0

$1,028.97/EA
Pullman Holt - 201300438 - Female Plug 3 Phase 250V 50A (T7500 T4000 T15000)
Pullman Holt - 201300438 - Female Plug 3 Phase 250V 50A (T7500 T4000 T15000)

p/n: PH201300438

Female Plug 3 Phase 250V 50A (T7500 T4000 T15000)

$330.87/EA
Pullman Holt - 201300447 - "5"" Full Dust Shroud"
Pullman Holt - 201300447 - "5"" Full Dust Shroud"

p/n: PH201300447

"5"" Full Dust Shroud"

$89.00/EA
Pullman Holt - 201300448 - Foam Filter For Cooling Fan T8 600 Propane
Pullman Holt - 201300448 - Foam Filter For Cooling Fan T8 600 Propane

p/n: PH201300448

Foam Filter For Cooling Fan T8 600 Propane

$64.54/EA
Pullman Holt - 201300449 - Air Filter Kawasaki T8600P
Pullman Holt - 201300449 - Air Filter Kawasaki T8600P

p/n: PH201300449

Air Filter Kawasaki T8600P

$49.19/EA

Browse our complete collection of industrial & commercial floor-cleaning machines for sale now and save on your new cleaning products. We also rent cleaning equipment and can help with repairs!

Feel free to reach out to us at 800-440-6723 today if you have any questions.